21209136

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:894

約数の個数: 80

約数和(自身を含む): 60516960

約数和(自身を除く): 39307824

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 41, 48, 52, 78, 82, 104, 123, 156, 164, 208, 246, 312, 328, 492, 533, 624, 656, 829, 984, 1066, 1599, 1658, 1968, 2132, 2487, 3198, 3316, 4264, 4974, 6396, 6632, 8528, 9948, 10777, 12792, 13264, 19896, 21554, 25584, 32331, 33989, 39792, 43108, 64662, 67978, 86216, 101967, 129324, 135956, 172432, 203934, 258648, 271912, 407868, 441857, 517296, 543824, 815736, 883714, 1325571, 1631472, 1767428, 2651142, 3534856, 5302284, 7069712, 10604568, 21209136]

約数ペア:

[(1, 21209136), (2, 10604568), (3, 7069712), (4, 5302284), (6, 3534856), (8, 2651142), (12, 1767428), (13, 1631472), (16, 1325571), (24, 883714), (26, 815736), (39, 543824), (41, 517296), (48, 441857), (52, 407868), (78, 271912), (82, 258648), (104, 203934), (123, 172432), (156, 135956), (164, 129324), (208, 101967), (246, 86216), (312, 67978), (328, 64662), (492, 43108), (533, 39792), (624, 33989), (656, 32331), (829, 25584), (984, 21554), (1066, 19896), (1599, 13264), (1658, 12792), (1968, 10777), (2132, 9948), (2487, 8528), (3198, 6632), (3316, 6396), (4264, 4974)]