39408440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:624

約数の個数: 64

約数和(自身を含む): 93208320

約数和(自身を除く): 53799880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 488, 521, 610, 620, 1042, 1220, 1240, 1891, 2084, 2440, 2605, 3782, 4168, 5210, 7564, 9455, 10420, 15128, 16151, 18910, 20840, 31781, 32302, 37820, 63562, 64604, 75640, 80755, 127124, 129208, 158905, 161510, 254248, 317810, 323020, 635620, 646040, 985211, 1271240, 1970422, 3940844, 4926055, 7881688, 9852110, 19704220, 39408440]

約数ペア:

[(1, 39408440), (2, 19704220), (4, 9852110), (5, 7881688), (8, 4926055), (10, 3940844), (20, 1970422), (31, 1271240), (40, 985211), (61, 646040), (62, 635620), (122, 323020), (124, 317810), (155, 254248), (244, 161510), (248, 158905), (305, 129208), (310, 127124), (488, 80755), (521, 75640), (610, 64604), (620, 63562), (1042, 37820), (1220, 32302), (1240, 31781), (1891, 20840), (2084, 18910), (2440, 16151), (2605, 15128), (3782, 10420), (4168, 9455), (5210, 7564)]