21702915

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1613}}^1$

素因数の和:1660

約数の個数: 48

約数和(自身を含む): 42299712

約数和(自身を除く): 20596797

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 195, 207, 299, 345, 585, 897, 1035, 1495, 1613, 2691, 4485, 4839, 8065, 13455, 14517, 20969, 24195, 37099, 62907, 72585, 104845, 111297, 185495, 188721, 314535, 333891, 482287, 556485, 943605, 1446861, 1669455, 2411435, 4340583, 7234305, 21702915]

約数ペア:

[(1, 21702915), (3, 7234305), (5, 4340583), (9, 2411435), (13, 1669455), (15, 1446861), (23, 943605), (39, 556485), (45, 482287), (65, 333891), (69, 314535), (115, 188721), (117, 185495), (195, 111297), (207, 104845), (299, 72585), (345, 62907), (585, 37099), (897, 24195), (1035, 20969), (1495, 14517), (1613, 13455), (2691, 8065), (4485, 4839)]