64679240

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4073}}^1$

素因数の和:4481

約数の個数: 32

約数和(自身を含む): 145930680

約数和(自身を除く): 81251440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 3176, 3970, 4073, 7940, 8146, 15880, 16292, 20365, 32584, 40730, 81460, 162920, 1616981, 3233962, 6467924, 8084905, 12935848, 16169810, 32339620, 64679240]

約数ペア:

[(1, 64679240), (2, 32339620), (4, 16169810), (5, 12935848), (8, 8084905), (10, 6467924), (20, 3233962), (40, 1616981), (397, 162920), (794, 81460), (1588, 40730), (1985, 32584), (3176, 20365), (3970, 16292), (4073, 15880), (7940, 8146)]