15643720

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3461}}^1$

素因数の和:3585

約数の個数: 32

約数和(自身を含む): 35520120

約数和(自身を除く): 19876400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 3461, 4520, 6922, 13844, 17305, 27688, 34610, 69220, 138440, 391093, 782186, 1564372, 1955465, 3128744, 3910930, 7821860, 15643720]

約数ペア:

[(1, 15643720), (2, 7821860), (4, 3910930), (5, 3128744), (8, 1955465), (10, 1564372), (20, 782186), (40, 391093), (113, 138440), (226, 69220), (452, 34610), (565, 27688), (904, 17305), (1130, 13844), (2260, 6922), (3461, 4520)]