31827880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1601}}^1$

素因数の和:1690

約数の個数: 64

約数和(自身を含む): 83047680

約数和(自身を除く): 51219800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1601, 1988, 2485, 2840, 3202, 3976, 4970, 6404, 8005, 9940, 11207, 12808, 16010, 19880, 22414, 32020, 44828, 56035, 64040, 89656, 112070, 113671, 224140, 227342, 448280, 454684, 568355, 795697, 909368, 1136710, 1591394, 2273420, 3182788, 3978485, 4546840, 6365576, 7956970, 15913940, 31827880]

約数ペア:

[(1, 31827880), (2, 15913940), (4, 7956970), (5, 6365576), (7, 4546840), (8, 3978485), (10, 3182788), (14, 2273420), (20, 1591394), (28, 1136710), (35, 909368), (40, 795697), (56, 568355), (70, 454684), (71, 448280), (140, 227342), (142, 224140), (280, 113671), (284, 112070), (355, 89656), (497, 64040), (568, 56035), (710, 44828), (994, 32020), (1420, 22414), (1601, 19880), (1988, 16010), (2485, 12808), (2840, 11207), (3202, 9940), (3976, 8005), (4970, 6404)]