20619249

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 34933248

約数和(自身を除く): 14313999

約数列:

[1, 3, 7, 17, 21, 37, 49, 51, 111, 119, 147, 223, 259, 357, 629, 669, 777, 833, 1561, 1813, 1887, 2499, 3791, 4403, 4683, 5439, 8251, 10927, 11373, 13209, 24753, 26537, 30821, 32781, 57757, 79611, 92463, 140267, 173271, 185759, 404299, 420801, 557277, 981869, 1212897, 2945607, 6873083, 20619249]

約数ペア:

[(1, 20619249), (3, 6873083), (7, 2945607), (17, 1212897), (21, 981869), (37, 557277), (49, 420801), (51, 404299), (111, 185759), (119, 173271), (147, 140267), (223, 92463), (259, 79611), (357, 57757), (629, 32781), (669, 30821), (777, 26537), (833, 24753), (1561, 13209), (1813, 11373), (1887, 10927), (2499, 8251), (3791, 5439), (4403, 4683)]