31331240

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1973}}^1$

素因数の和:2381

約数の個数: 32

約数和(自身を含む): 70708680

約数和(自身を除く): 39377440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1973, 1985, 3176, 3946, 3970, 7892, 7940, 9865, 15784, 15880, 19730, 39460, 78920, 783281, 1566562, 3133124, 3916405, 6266248, 7832810, 15665620, 31331240]

約数ペア:

[(1, 31331240), (2, 15665620), (4, 7832810), (5, 6266248), (8, 3916405), (10, 3133124), (20, 1566562), (40, 783281), (397, 78920), (794, 39460), (1588, 19730), (1973, 15880), (1985, 15784), (3176, 9865), (3946, 7940), (3970, 7892)]