31818280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1423}}^1$

素因数の和:1490

約数の個数: 64

約数和(自身を含む): 78946560

約数和(自身を除く): 47128280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 1118, 1423, 1720, 2236, 2795, 2846, 4472, 5590, 5692, 7115, 11180, 11384, 14230, 18499, 22360, 28460, 36998, 56920, 61189, 73996, 92495, 122378, 147992, 184990, 244756, 305945, 369980, 489512, 611890, 739960, 795457, 1223780, 1590914, 2447560, 3181828, 3977285, 6363656, 7954570, 15909140, 31818280]

約数ペア:

[(1, 31818280), (2, 15909140), (4, 7954570), (5, 6363656), (8, 3977285), (10, 3181828), (13, 2447560), (20, 1590914), (26, 1223780), (40, 795457), (43, 739960), (52, 611890), (65, 489512), (86, 369980), (104, 305945), (130, 244756), (172, 184990), (215, 147992), (260, 122378), (344, 92495), (430, 73996), (520, 61189), (559, 56920), (860, 36998), (1118, 28460), (1423, 22360), (1720, 18499), (2236, 14230), (2795, 11384), (2846, 11180), (4472, 7115), (5590, 5692)]