39817640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 93519360

約数和(自身を除く): 53701720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 163, 197, 248, 310, 326, 394, 620, 652, 788, 815, 985, 1240, 1304, 1576, 1630, 1970, 3260, 3940, 5053, 6107, 6520, 7880, 10106, 12214, 20212, 24428, 25265, 30535, 32111, 40424, 48856, 50530, 61070, 64222, 101060, 122140, 128444, 160555, 202120, 244280, 256888, 321110, 642220, 995441, 1284440, 1990882, 3981764, 4977205, 7963528, 9954410, 19908820, 39817640]

約数ペア:

[(1, 39817640), (2, 19908820), (4, 9954410), (5, 7963528), (8, 4977205), (10, 3981764), (20, 1990882), (31, 1284440), (40, 995441), (62, 642220), (124, 321110), (155, 256888), (163, 244280), (197, 202120), (248, 160555), (310, 128444), (326, 122140), (394, 101060), (620, 64222), (652, 61070), (788, 50530), (815, 48856), (985, 40424), (1240, 32111), (1304, 30535), (1576, 25265), (1630, 24428), (1970, 20212), (3260, 12214), (3940, 10106), (5053, 7880), (6107, 6520)]