20729904

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:402

約数の個数: 80

約数和(自身を含む): 58329600

約数和(自身を除く): 37599696

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 139, 156, 208, 239, 278, 312, 417, 478, 556, 624, 717, 834, 956, 1112, 1434, 1668, 1807, 1912, 2224, 2868, 3107, 3336, 3614, 3824, 5421, 5736, 6214, 6672, 7228, 9321, 10842, 11472, 12428, 14456, 18642, 21684, 24856, 28912, 33221, 37284, 43368, 49712, 66442, 74568, 86736, 99663, 132884, 149136, 199326, 265768, 398652, 431873, 531536, 797304, 863746, 1295619, 1594608, 1727492, 2591238, 3454984, 5182476, 6909968, 10364952, 20729904]

約数ペア:

[(1, 20729904), (2, 10364952), (3, 6909968), (4, 5182476), (6, 3454984), (8, 2591238), (12, 1727492), (13, 1594608), (16, 1295619), (24, 863746), (26, 797304), (39, 531536), (48, 431873), (52, 398652), (78, 265768), (104, 199326), (139, 149136), (156, 132884), (208, 99663), (239, 86736), (278, 74568), (312, 66442), (417, 49712), (478, 43368), (556, 37284), (624, 33221), (717, 28912), (834, 24856), (956, 21684), (1112, 18642), (1434, 14456), (1668, 12428), (1807, 11472), (1912, 10842), (2224, 9321), (2868, 7228), (3107, 6672), (3336, 6214), (3614, 5736), (3824, 5421)]