71840

素因数分解:

$2^5\times 5^1\times {\mathrm{449}}^1$

素因数の和:464

約数の個数: 24

約数和(自身を含む): 170100

約数和(自身を除く): 98260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 449, 898, 1796, 2245, 3592, 4490, 7184, 8980, 14368, 17960, 35920, 71840]

約数ペア:

[(1, 71840), (2, 35920), (4, 17960), (5, 14368), (8, 8980), (10, 7184), (16, 4490), (20, 3592), (32, 2245), (40, 1796), (80, 898), (160, 449)]