398460856

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{821}}^1$

素因数の和:980

約数の個数: 64

約数和(自身を含む): 820684800

約数和(自身を除く): 422223944

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 103, 124, 152, 206, 248, 412, 589, 821, 824, 1178, 1642, 1957, 2356, 3193, 3284, 3914, 4712, 6386, 6568, 7828, 12772, 15599, 15656, 25451, 25544, 31198, 50902, 60667, 62396, 84563, 101804, 121334, 124792, 169126, 203608, 242668, 338252, 483569, 485336, 676504, 967138, 1606697, 1934276, 2621453, 3213394, 3868552, 5242906, 6426788, 10485812, 12853576, 20971624, 49807607, 99615214, 199230428, 398460856]

約数ペア:

[(1, 398460856), (2, 199230428), (4, 99615214), (8, 49807607), (19, 20971624), (31, 12853576), (38, 10485812), (62, 6426788), (76, 5242906), (103, 3868552), (124, 3213394), (152, 2621453), (206, 1934276), (248, 1606697), (412, 967138), (589, 676504), (821, 485336), (824, 483569), (1178, 338252), (1642, 242668), (1957, 203608), (2356, 169126), (3193, 124792), (3284, 121334), (3914, 101804), (4712, 84563), (6386, 62396), (6568, 60667), (7828, 50902), (12772, 31198), (15599, 25544), (15656, 25451)]