20639710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 47037312

約数和(自身を除く): 26397602

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 37, 65, 70, 74, 91, 130, 182, 185, 259, 370, 455, 481, 518, 613, 910, 962, 1226, 1295, 2405, 2590, 3065, 3367, 4291, 4810, 6130, 6734, 7969, 8582, 15938, 16835, 21455, 22681, 33670, 39845, 42910, 45362, 55783, 79690, 111566, 113405, 158767, 226810, 278915, 294853, 317534, 557830, 589706, 793835, 1474265, 1587670, 2063971, 2948530, 4127942, 10319855, 20639710]

約数ペア:

[(1, 20639710), (2, 10319855), (5, 4127942), (7, 2948530), (10, 2063971), (13, 1587670), (14, 1474265), (26, 793835), (35, 589706), (37, 557830), (65, 317534), (70, 294853), (74, 278915), (91, 226810), (130, 158767), (182, 113405), (185, 111566), (259, 79690), (370, 55783), (455, 45362), (481, 42910), (518, 39845), (613, 33670), (910, 22681), (962, 21455), (1226, 16835), (1295, 15938), (2405, 8582), (2590, 7969), (3065, 6734), (3367, 6130), (4291, 4810)]