71144680

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{6421}}^1$

素因数の和:6709

約数の個数: 32

約数和(自身を含む): 160678440

約数和(自身を除く): 89533760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 6421, 11080, 12842, 25684, 32105, 51368, 64210, 128420, 256840, 1778617, 3557234, 7114468, 8893085, 14228936, 17786170, 35572340, 71144680]

約数ペア:

[(1, 71144680), (2, 35572340), (4, 17786170), (5, 14228936), (8, 8893085), (10, 7114468), (20, 3557234), (40, 1778617), (277, 256840), (554, 128420), (1108, 64210), (1385, 51368), (2216, 32105), (2770, 25684), (5540, 12842), (6421, 11080)]