20651960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73757}}^1$

素因数の和:73775

約数の個数: 32

約数和(自身を含む): 53105760

約数和(自身を除く): 32453800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73757, 147514, 295028, 368785, 516299, 590056, 737570, 1032598, 1475140, 2065196, 2581495, 2950280, 4130392, 5162990, 10325980, 20651960]

約数ペア:

[(1, 20651960), (2, 10325980), (4, 5162990), (5, 4130392), (7, 2950280), (8, 2581495), (10, 2065196), (14, 1475140), (20, 1032598), (28, 737570), (35, 590056), (40, 516299), (56, 368785), (70, 295028), (140, 147514), (280, 73757)]