21297020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{503}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 25695940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 73, 116, 145, 146, 290, 292, 365, 503, 580, 730, 1006, 1460, 2012, 2117, 2515, 4234, 5030, 8468, 10060, 10585, 14587, 21170, 29174, 36719, 42340, 58348, 72935, 73438, 145870, 146876, 183595, 291740, 367190, 734380, 1064851, 2129702, 4259404, 5324255, 10648510, 21297020]

約数ペア:

[(1, 21297020), (2, 10648510), (4, 5324255), (5, 4259404), (10, 2129702), (20, 1064851), (29, 734380), (58, 367190), (73, 291740), (116, 183595), (145, 146876), (146, 145870), (290, 73438), (292, 72935), (365, 58348), (503, 42340), (580, 36719), (730, 29174), (1006, 21170), (1460, 14587), (2012, 10585), (2117, 10060), (2515, 8468), (4234, 5030)]