721471212

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{11}}^3\times {\mathrm{239}}^1$

素因数の和:295

約数の個数: 240

約数和(自身を含む): 2380815360

約数和(自身を除く): 1659344148

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 27, 28, 33, 36, 42, 44, 54, 63, 66, 77, 81, 84, 99, 108, 121, 126, 132, 154, 162, 189, 198, 231, 239, 242, 252, 297, 308, 324, 363, 378, 396, 462, 478, 484, 567, 594, 693, 717, 726, 756, 847, 891, 924, 956, 1089, 1134, 1188, 1331, 1386, 1434, 1452, 1673, 1694, 1782, 2079, 2151, 2178, 2268, 2541, 2629, 2662, 2772, 2868, 3267, 3346, 3388, 3564, 3993, 4158, 4302, 4356, 5019, 5082, 5258, 5324, 6237, 6453, 6534, 6692, 7623, 7887, 7986, 8316, 8604, 9317, 9801, 10038, 10164, 10516, 11979, 12474, 12906, 13068, 15057, 15246, 15774, 15972, 18403, 18634, 19359, 19602, 20076, 22869, 23661, 23958, 24948, 25812, 27951, 28919, 30114, 30492, 31548, 35937, 36806, 37268, 38718, 39204, 45171, 45738, 47322, 47916, 55209, 55902, 57838, 60228, 68607, 70983, 71874, 73612, 77436, 83853, 86757, 90342, 91476, 94644, 107811, 110418, 111804, 115676, 135513, 137214, 141966, 143748, 165627, 167706, 173514, 180684, 202433, 212949, 215622, 220836, 251559, 260271, 271026, 274428, 283932, 318109, 331254, 335412, 347028, 404866, 425898, 431244, 496881, 503118, 520542, 542052, 607299, 636218, 662508, 754677, 780813, 809732, 851796, 954327, 993762, 1006236, 1041084, 1214598, 1272436, 1490643, 1509354, 1561626, 1821897, 1908654, 1987524, 2226763, 2342439, 2429196, 2862981, 2981286, 3018708, 3123252, 3643794, 3817308, 4453526, 4684878, 5465691, 5725962, 5962572, 6680289, 7287588, 8588943, 8907052, 9369756, 10931382, 11451924, 13360578, 16397073, 17177886, 20040867, 21862764, 25766829, 26721156, 32794146, 34355772, 40081734, 51533658, 60122601, 65588292, 80163468, 103067316, 120245202, 180367803, 240490404, 360735606, 721471212]

約数ペア:

[(1, 721471212), (2, 360735606), (3, 240490404), (4, 180367803), (6, 120245202), (7, 103067316), (9, 80163468), (11, 65588292), (12, 60122601), (14, 51533658), (18, 40081734), (21, 34355772), (22, 32794146), (27, 26721156), (28, 25766829), (33, 21862764), (36, 20040867), (42, 17177886), (44, 16397073), (54, 13360578), (63, 11451924), (66, 10931382), (77, 9369756), (81, 8907052), (84, 8588943), (99, 7287588), (108, 6680289), (121, 5962572), (126, 5725962), (132, 5465691), (154, 4684878), (162, 4453526), (189, 3817308), (198, 3643794), (231, 3123252), (239, 3018708), (242, 2981286), (252, 2862981), (297, 2429196), (308, 2342439), (324, 2226763), (363, 1987524), (378, 1908654), (396, 1821897), (462, 1561626), (478, 1509354), (484, 1490643), (567, 1272436), (594, 1214598), (693, 1041084), (717, 1006236), (726, 993762), (756, 954327), (847, 851796), (891, 809732), (924, 780813), (956, 754677), (1089, 662508), (1134, 636218), (1188, 607299), (1331, 542052), (1386, 520542), (1434, 503118), (1452, 496881), (1673, 431244), (1694, 425898), (1782, 404866), (2079, 347028), (2151, 335412), (2178, 331254), (2268, 318109), (2541, 283932), (2629, 274428), (2662, 271026), (2772, 260271), (2868, 251559), (3267, 220836), (3346, 215622), (3388, 212949), (3564, 202433), (3993, 180684), (4158, 173514), (4302, 167706), (4356, 165627), (5019, 143748), (5082, 141966), (5258, 137214), (5324, 135513), (6237, 115676), (6453, 111804), (6534, 110418), (6692, 107811), (7623, 94644), (7887, 91476), (7986, 90342), (8316, 86757), (8604, 83853), (9317, 77436), (9801, 73612), (10038, 71874), (10164, 70983), (10516, 68607), (11979, 60228), (12474, 57838), (12906, 55902), (13068, 55209), (15057, 47916), (15246, 47322), (15774, 45738), (15972, 45171), (18403, 39204), (18634, 38718), (19359, 37268), (19602, 36806), (20076, 35937), (22869, 31548), (23661, 30492), (23958, 30114), (24948, 28919), (25812, 27951)]