51686920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{571}}^1$

素因数の和:686

約数の個数: 64

約数和(自身を含む): 121904640

約数和(自身を除く): 70217720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 248, 292, 310, 365, 571, 584, 620, 730, 1142, 1240, 1460, 2263, 2284, 2855, 2920, 4526, 4568, 5710, 9052, 11315, 11420, 17701, 18104, 22630, 22840, 35402, 41683, 45260, 70804, 83366, 88505, 90520, 141608, 166732, 177010, 208415, 333464, 354020, 416830, 708040, 833660, 1292173, 1667320, 2584346, 5168692, 6460865, 10337384, 12921730, 25843460, 51686920]

約数ペア:

[(1, 51686920), (2, 25843460), (4, 12921730), (5, 10337384), (8, 6460865), (10, 5168692), (20, 2584346), (31, 1667320), (40, 1292173), (62, 833660), (73, 708040), (124, 416830), (146, 354020), (155, 333464), (248, 208415), (292, 177010), (310, 166732), (365, 141608), (571, 90520), (584, 88505), (620, 83366), (730, 70804), (1142, 45260), (1240, 41683), (1460, 35402), (2263, 22840), (2284, 22630), (2855, 18104), (2920, 17701), (4526, 11420), (4568, 11315), (5710, 9052)]