21491550

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:474

約数の個数: 72

約数和(自身を含む): 58293144

約数和(自身を除く): 36801594

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 163, 225, 293, 326, 450, 489, 586, 815, 879, 978, 1465, 1467, 1630, 1758, 2445, 2637, 2930, 2934, 4075, 4395, 4890, 5274, 7325, 7335, 8150, 8790, 12225, 13185, 14650, 14670, 21975, 24450, 26370, 36675, 43950, 47759, 65925, 73350, 95518, 131850, 143277, 238795, 286554, 429831, 477590, 716385, 859662, 1193975, 1432770, 2149155, 2387950, 3581925, 4298310, 7163850, 10745775, 21491550]

約数ペア:

[(1, 21491550), (2, 10745775), (3, 7163850), (5, 4298310), (6, 3581925), (9, 2387950), (10, 2149155), (15, 1432770), (18, 1193975), (25, 859662), (30, 716385), (45, 477590), (50, 429831), (75, 286554), (90, 238795), (150, 143277), (163, 131850), (225, 95518), (293, 73350), (326, 65925), (450, 47759), (489, 43950), (586, 36675), (815, 26370), (879, 24450), (978, 21975), (1465, 14670), (1467, 14650), (1630, 13185), (1758, 12225), (2445, 8790), (2637, 8150), (2930, 7335), (2934, 7325), (4075, 5274), (4395, 4890)]