64231840

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2557}}^1$

素因数の和:2729

約数の個数: 48

約数和(自身を含む): 152773992

約数和(自身を除く): 88542152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 1256, 1570, 2512, 2557, 3140, 5024, 5114, 6280, 10228, 12560, 12785, 20456, 25120, 25570, 40912, 51140, 81824, 102280, 204560, 401449, 409120, 802898, 1605796, 2007245, 3211592, 4014490, 6423184, 8028980, 12846368, 16057960, 32115920, 64231840]

約数ペア:

[(1, 64231840), (2, 32115920), (4, 16057960), (5, 12846368), (8, 8028980), (10, 6423184), (16, 4014490), (20, 3211592), (32, 2007245), (40, 1605796), (80, 802898), (157, 409120), (160, 401449), (314, 204560), (628, 102280), (785, 81824), (1256, 51140), (1570, 40912), (2512, 25570), (2557, 25120), (3140, 20456), (5024, 12785), (5114, 12560), (6280, 10228)]