990492080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{728303}}^1$

素因数の和:728333

約数の個数: 40

約数和(自身を含む): 2438361792

約数和(自身を除く): 1447869712

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 728303, 1456606, 2913212, 3641515, 5826424, 7283030, 11652848, 12381151, 14566060, 24762302, 29132120, 49524604, 58264240, 61905755, 99049208, 123811510, 198098416, 247623020, 495246040, 990492080]

約数ペア:

[(1, 990492080), (2, 495246040), (4, 247623020), (5, 198098416), (8, 123811510), (10, 99049208), (16, 61905755), (17, 58264240), (20, 49524604), (34, 29132120), (40, 24762302), (68, 14566060), (80, 12381151), (85, 11652848), (136, 7283030), (170, 5826424), (272, 3641515), (340, 2913212), (680, 1456606), (1360, 728303)]