20504295

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{547}}^1$

素因数の和:589

約数の個数: 72

約数和(自身を含む): 43855344

約数和(自身を除く): 23351049

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 49, 51, 63, 85, 105, 119, 147, 153, 245, 255, 315, 357, 441, 547, 595, 735, 765, 833, 1071, 1641, 1785, 2205, 2499, 2735, 3829, 4165, 4923, 5355, 7497, 8205, 9299, 11487, 12495, 19145, 24615, 26803, 27897, 34461, 37485, 46495, 57435, 65093, 80409, 83691, 134015, 139485, 172305, 195279, 241227, 325465, 402045, 418455, 455651, 585837, 976395, 1206135, 1366953, 2278255, 2929185, 4100859, 6834765, 20504295]

約数ペア:

[(1, 20504295), (3, 6834765), (5, 4100859), (7, 2929185), (9, 2278255), (15, 1366953), (17, 1206135), (21, 976395), (35, 585837), (45, 455651), (49, 418455), (51, 402045), (63, 325465), (85, 241227), (105, 195279), (119, 172305), (147, 139485), (153, 134015), (245, 83691), (255, 80409), (315, 65093), (357, 57435), (441, 46495), (547, 37485), (595, 34461), (735, 27897), (765, 26803), (833, 24615), (1071, 19145), (1641, 12495), (1785, 11487), (2205, 9299), (2499, 8205), (2735, 7497), (3829, 5355), (4165, 4923)]