20917260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1277}}^1$

素因数の和:1312

約数の個数: 144

約数和(自身を含む): 78152256

約数和(自身を除く): 57234996

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1277, 1365, 1638, 1820, 2340, 2554, 2730, 3276, 3831, 4095, 5108, 5460, 6385, 7662, 8190, 8939, 11493, 12770, 15324, 16380, 16601, 17878, 19155, 22986, 25540, 26817, 33202, 35756, 38310, 44695, 45972, 49803, 53634, 57465, 66404, 76620, 80451, 83005, 89390, 99606, 107268, 114930, 116207, 134085, 149409, 160902, 166010, 178780, 199212, 229860, 232414, 249015, 268170, 298818, 321804, 332020, 348621, 402255, 464828, 498030, 536340, 581035, 597636, 697242, 747045, 804510, 996060, 1045863, 1162070, 1394484, 1494090, 1609020, 1743105, 2091726, 2324140, 2988180, 3486210, 4183452, 5229315, 6972420, 10458630, 20917260]

約数ペア:

[(1, 20917260), (2, 10458630), (3, 6972420), (4, 5229315), (5, 4183452), (6, 3486210), (7, 2988180), (9, 2324140), (10, 2091726), (12, 1743105), (13, 1609020), (14, 1494090), (15, 1394484), (18, 1162070), (20, 1045863), (21, 996060), (26, 804510), (28, 747045), (30, 697242), (35, 597636), (36, 581035), (39, 536340), (42, 498030), (45, 464828), (52, 402255), (60, 348621), (63, 332020), (65, 321804), (70, 298818), (78, 268170), (84, 249015), (90, 232414), (91, 229860), (105, 199212), (117, 178780), (126, 166010), (130, 160902), (140, 149409), (156, 134085), (180, 116207), (182, 114930), (195, 107268), (210, 99606), (234, 89390), (252, 83005), (260, 80451), (273, 76620), (315, 66404), (364, 57465), (390, 53634), (420, 49803), (455, 45972), (468, 44695), (546, 38310), (585, 35756), (630, 33202), (780, 26817), (819, 25540), (910, 22986), (1092, 19155), (1170, 17878), (1260, 16601), (1277, 16380), (1365, 15324), (1638, 12770), (1820, 11493), (2340, 8939), (2554, 8190), (2730, 7662), (3276, 6385), (3831, 5460), (4095, 5108)]