31308225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 56371392

約数和(自身を除く): 25063167

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 163, 195, 197, 325, 489, 591, 815, 975, 985, 2119, 2445, 2561, 2955, 4075, 4925, 6357, 7683, 10595, 12225, 12805, 14775, 31785, 32111, 38415, 52975, 64025, 96333, 158925, 160555, 192075, 417443, 481665, 802775, 1252329, 2087215, 2408325, 6261645, 10436075, 31308225]

約数ペア:

[(1, 31308225), (3, 10436075), (5, 6261645), (13, 2408325), (15, 2087215), (25, 1252329), (39, 802775), (65, 481665), (75, 417443), (163, 192075), (195, 160555), (197, 158925), (325, 96333), (489, 64025), (591, 52975), (815, 38415), (975, 32111), (985, 31785), (2119, 14775), (2445, 12805), (2561, 12225), (2955, 10595), (4075, 7683), (4925, 6357)]