68758640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20963}}^1$

素因数の和:21017

約数の個数: 40

約数和(自身を含む): 163770768

約数和(自身を除く): 95012128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 20963, 41926, 83852, 104815, 167704, 209630, 335408, 419260, 838520, 859483, 1677040, 1718966, 3437932, 4297415, 6875864, 8594830, 13751728, 17189660, 34379320, 68758640]

約数ペア:

[(1, 68758640), (2, 34379320), (4, 17189660), (5, 13751728), (8, 8594830), (10, 6875864), (16, 4297415), (20, 3437932), (40, 1718966), (41, 1677040), (80, 859483), (82, 838520), (164, 419260), (205, 335408), (328, 209630), (410, 167704), (656, 104815), (820, 83852), (1640, 41926), (3280, 20963)]