20465940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2819}}^1$

素因数の和:2853

約数の個数: 72

約数和(自身を含む): 63010080

約数和(自身を除く): 42544140

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 121, 132, 165, 220, 242, 330, 363, 484, 605, 660, 726, 1210, 1452, 1815, 2420, 2819, 3630, 5638, 7260, 8457, 11276, 14095, 16914, 28190, 31009, 33828, 42285, 56380, 62018, 84570, 93027, 124036, 155045, 169140, 186054, 310090, 341099, 372108, 465135, 620180, 682198, 930270, 1023297, 1364396, 1705495, 1860540, 2046594, 3410990, 4093188, 5116485, 6821980, 10232970, 20465940]

約数ペア:

[(1, 20465940), (2, 10232970), (3, 6821980), (4, 5116485), (5, 4093188), (6, 3410990), (10, 2046594), (11, 1860540), (12, 1705495), (15, 1364396), (20, 1023297), (22, 930270), (30, 682198), (33, 620180), (44, 465135), (55, 372108), (60, 341099), (66, 310090), (110, 186054), (121, 169140), (132, 155045), (165, 124036), (220, 93027), (242, 84570), (330, 62018), (363, 56380), (484, 42285), (605, 33828), (660, 31009), (726, 28190), (1210, 16914), (1452, 14095), (1815, 11276), (2420, 8457), (2819, 7260), (3630, 5638)]