21000786784

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{421}}^1\times {\mathrm{42131}}^1$

素因数の和:42599

約数の個数: 48

約数和(自身を含む): 42564611376

約数和(自身を除く): 21563824592

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 148, 296, 421, 592, 842, 1184, 1684, 3368, 6736, 13472, 15577, 31154, 42131, 62308, 84262, 124616, 168524, 249232, 337048, 498464, 674096, 1348192, 1558847, 3117694, 6235388, 12470776, 17737151, 24941552, 35474302, 49883104, 70948604, 141897208, 283794416, 567588832, 656274587, 1312549174, 2625098348, 5250196696, 10500393392, 21000786784]

約数ペア:

[(1, 21000786784), (2, 10500393392), (4, 5250196696), (8, 2625098348), (16, 1312549174), (32, 656274587), (37, 567588832), (74, 283794416), (148, 141897208), (296, 70948604), (421, 49883104), (592, 35474302), (842, 24941552), (1184, 17737151), (1684, 12470776), (3368, 6235388), (6736, 3117694), (13472, 1558847), (15577, 1348192), (31154, 674096), (42131, 498464), (62308, 337048), (84262, 249232), (124616, 168524)]