20295555

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 38561184

約数和(自身を除く): 18265629

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 53, 105, 147, 159, 245, 265, 371, 521, 735, 795, 1113, 1563, 1855, 2597, 2605, 3647, 5565, 7791, 7815, 10941, 12985, 18235, 25529, 27613, 38955, 54705, 76587, 82839, 127645, 138065, 193291, 382935, 414195, 579873, 966455, 1353037, 2899365, 4059111, 6765185, 20295555]

約数ペア:

[(1, 20295555), (3, 6765185), (5, 4059111), (7, 2899365), (15, 1353037), (21, 966455), (35, 579873), (49, 414195), (53, 382935), (105, 193291), (147, 138065), (159, 127645), (245, 82839), (265, 76587), (371, 54705), (521, 38955), (735, 27613), (795, 25529), (1113, 18235), (1563, 12985), (1855, 10941), (2597, 7815), (2605, 7791), (3647, 5565)]