21515130

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:141

約数の個数: 192

約数和(自身を含む): 71705088

約数和(自身を除く): 50189958

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 37, 39, 42, 45, 63, 65, 70, 71, 74, 78, 90, 91, 105, 111, 117, 126, 130, 142, 182, 185, 195, 210, 213, 222, 234, 259, 273, 315, 333, 355, 370, 390, 426, 455, 481, 497, 518, 546, 555, 585, 630, 639, 666, 710, 777, 819, 910, 923, 962, 994, 1065, 1110, 1170, 1278, 1295, 1365, 1443, 1491, 1554, 1638, 1665, 1846, 2130, 2331, 2405, 2485, 2590, 2627, 2730, 2769, 2886, 2982, 3195, 3330, 3367, 3885, 4095, 4329, 4473, 4615, 4662, 4810, 4970, 5254, 5538, 6390, 6461, 6734, 7215, 7455, 7770, 7881, 8190, 8307, 8658, 8946, 9230, 10101, 11655, 12922, 13135, 13845, 14430, 14910, 15762, 16614, 16835, 18389, 19383, 20202, 21645, 22365, 23310, 23643, 26270, 27690, 30303, 32305, 33670, 34151, 36778, 38766, 39405, 41535, 43290, 44730, 47286, 50505, 55167, 58149, 60606, 64610, 68302, 78810, 83070, 91945, 96915, 101010, 102453, 110334, 116298, 118215, 151515, 165501, 170755, 183890, 193830, 204906, 236430, 239057, 275835, 290745, 303030, 307359, 331002, 341510, 478114, 512265, 551670, 581490, 614718, 717171, 827505, 1024530, 1195285, 1434342, 1536795, 1655010, 2151513, 2390570, 3073590, 3585855, 4303026, 7171710, 10757565, 21515130]

約数ペア:

[(1, 21515130), (2, 10757565), (3, 7171710), (5, 4303026), (6, 3585855), (7, 3073590), (9, 2390570), (10, 2151513), (13, 1655010), (14, 1536795), (15, 1434342), (18, 1195285), (21, 1024530), (26, 827505), (30, 717171), (35, 614718), (37, 581490), (39, 551670), (42, 512265), (45, 478114), (63, 341510), (65, 331002), (70, 307359), (71, 303030), (74, 290745), (78, 275835), (90, 239057), (91, 236430), (105, 204906), (111, 193830), (117, 183890), (126, 170755), (130, 165501), (142, 151515), (182, 118215), (185, 116298), (195, 110334), (210, 102453), (213, 101010), (222, 96915), (234, 91945), (259, 83070), (273, 78810), (315, 68302), (333, 64610), (355, 60606), (370, 58149), (390, 55167), (426, 50505), (455, 47286), (481, 44730), (497, 43290), (518, 41535), (546, 39405), (555, 38766), (585, 36778), (630, 34151), (639, 33670), (666, 32305), (710, 30303), (777, 27690), (819, 26270), (910, 23643), (923, 23310), (962, 22365), (994, 21645), (1065, 20202), (1110, 19383), (1170, 18389), (1278, 16835), (1295, 16614), (1365, 15762), (1443, 14910), (1491, 14430), (1554, 13845), (1638, 13135), (1665, 12922), (1846, 11655), (2130, 10101), (2331, 9230), (2405, 8946), (2485, 8658), (2590, 8307), (2627, 8190), (2730, 7881), (2769, 7770), (2886, 7455), (2982, 7215), (3195, 6734), (3330, 6461), (3367, 6390), (3885, 5538), (4095, 5254), (4329, 4970), (4473, 4810), (4615, 4662)]