51321640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1063}}^1$

素因数の和:1162

約数の個数: 64

約数和(自身を含む): 124104960

約数和(自身を除く): 72783320

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 71, 85, 136, 142, 170, 284, 340, 355, 568, 680, 710, 1063, 1207, 1420, 2126, 2414, 2840, 4252, 4828, 5315, 6035, 8504, 9656, 10630, 12070, 18071, 21260, 24140, 36142, 42520, 48280, 72284, 75473, 90355, 144568, 150946, 180710, 301892, 361420, 377365, 603784, 722840, 754730, 1283041, 1509460, 2566082, 3018920, 5132164, 6415205, 10264328, 12830410, 25660820, 51321640]

約数ペア:

[(1, 51321640), (2, 25660820), (4, 12830410), (5, 10264328), (8, 6415205), (10, 5132164), (17, 3018920), (20, 2566082), (34, 1509460), (40, 1283041), (68, 754730), (71, 722840), (85, 603784), (136, 377365), (142, 361420), (170, 301892), (284, 180710), (340, 150946), (355, 144568), (568, 90355), (680, 75473), (710, 72284), (1063, 48280), (1207, 42520), (1420, 36142), (2126, 24140), (2414, 21260), (2840, 18071), (4252, 12070), (4828, 10630), (5315, 9656), (6035, 8504)]