65911480

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1697}}^1$

素因数の和:2679

約数の個数: 32

約数和(自身を含む): 148541040

約数和(自身を除く): 82629560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1697, 1942, 3394, 3884, 4855, 6788, 7768, 8485, 9710, 13576, 16970, 19420, 33940, 38840, 67880, 1647787, 3295574, 6591148, 8238935, 13182296, 16477870, 32955740, 65911480]

約数ペア:

[(1, 65911480), (2, 32955740), (4, 16477870), (5, 13182296), (8, 8238935), (10, 6591148), (20, 3295574), (40, 1647787), (971, 67880), (1697, 38840), (1942, 33940), (3394, 19420), (3884, 16970), (4855, 13576), (6788, 9710), (7768, 8485)]