64998940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{2557}}^1$

素因数の和:2638

約数の個数: 48

約数和(自身を含む): 144393984

約数和(自身を除く): 79395044

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 124, 155, 164, 205, 310, 410, 620, 820, 1271, 2542, 2557, 5084, 5114, 6355, 10228, 12710, 12785, 25420, 25570, 51140, 79267, 104837, 158534, 209674, 317068, 396335, 419348, 524185, 792670, 1048370, 1585340, 2096740, 3249947, 6499894, 12999788, 16249735, 32499470, 64998940]

約数ペア:

[(1, 64998940), (2, 32499470), (4, 16249735), (5, 12999788), (10, 6499894), (20, 3249947), (31, 2096740), (41, 1585340), (62, 1048370), (82, 792670), (124, 524185), (155, 419348), (164, 396335), (205, 317068), (310, 209674), (410, 158534), (620, 104837), (820, 79267), (1271, 51140), (2542, 25570), (2557, 25420), (5084, 12785), (5114, 12710), (6355, 10228)]