20864860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{461}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 45948672

約数和(自身を除く): 25083812

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 73, 124, 146, 155, 292, 310, 365, 461, 620, 730, 922, 1460, 1844, 2263, 2305, 4526, 4610, 9052, 9220, 11315, 14291, 22630, 28582, 33653, 45260, 57164, 67306, 71455, 134612, 142910, 168265, 285820, 336530, 673060, 1043243, 2086486, 4172972, 5216215, 10432430, 20864860]

約数ペア:

[(1, 20864860), (2, 10432430), (4, 5216215), (5, 4172972), (10, 2086486), (20, 1043243), (31, 673060), (62, 336530), (73, 285820), (124, 168265), (146, 142910), (155, 134612), (292, 71455), (310, 67306), (365, 57164), (461, 45260), (620, 33653), (730, 28582), (922, 22630), (1460, 14291), (1844, 11315), (2263, 9220), (2305, 9052), (4526, 4610)]