21878045240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1193}}^1\times {\mathrm{12391}}^1$

素因数の和:13632

約数の個数: 64

約数和(自身を含む): 50602484160

約数和(自身を除く): 28724438920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1193, 1480, 2386, 4772, 5965, 9544, 11930, 12391, 23860, 24782, 44141, 47720, 49564, 61955, 88282, 99128, 123910, 176564, 220705, 247820, 353128, 441410, 458467, 495640, 882820, 916934, 1765640, 1833868, 2292335, 3667736, 4584670, 9169340, 14782463, 18338680, 29564926, 59129852, 73912315, 118259704, 147824630, 295649260, 546951131, 591298520, 1093902262, 2187804524, 2734755655, 4375609048, 5469511310, 10939022620, 21878045240]

約数ペア:

[(1, 21878045240), (2, 10939022620), (4, 5469511310), (5, 4375609048), (8, 2734755655), (10, 2187804524), (20, 1093902262), (37, 591298520), (40, 546951131), (74, 295649260), (148, 147824630), (185, 118259704), (296, 73912315), (370, 59129852), (740, 29564926), (1193, 18338680), (1480, 14782463), (2386, 9169340), (4772, 4584670), (5965, 3667736), (9544, 2292335), (11930, 1833868), (12391, 1765640), (23860, 916934), (24782, 882820), (44141, 495640), (47720, 458467), (49564, 441410), (61955, 353128), (88282, 247820), (99128, 220705), (123910, 176564)]