31413680

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1861}}^1$

素因数の和:2085

約数の個数: 40

約数和(自身を含む): 73422384

約数和(自身を除く): 42008704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 1861, 2110, 3376, 3722, 4220, 7444, 8440, 9305, 14888, 16880, 18610, 29776, 37220, 74440, 148880, 392671, 785342, 1570684, 1963355, 3141368, 3926710, 6282736, 7853420, 15706840, 31413680]

約数ペア:

[(1, 31413680), (2, 15706840), (4, 7853420), (5, 6282736), (8, 3926710), (10, 3141368), (16, 1963355), (20, 1570684), (40, 785342), (80, 392671), (211, 148880), (422, 74440), (844, 37220), (1055, 29776), (1688, 18610), (1861, 16880), (2110, 14888), (3376, 9305), (3722, 8440), (4220, 7444)]