20335245

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 38468160

約数和(自身を除く): 18132915

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 73, 105, 147, 219, 245, 365, 379, 511, 735, 1095, 1137, 1533, 1895, 2555, 2653, 3577, 5685, 7665, 7959, 10731, 13265, 17885, 18571, 27667, 39795, 53655, 55713, 83001, 92855, 138335, 193669, 278565, 415005, 581007, 968345, 1355683, 2905035, 4067049, 6778415, 20335245]

約数ペア:

[(1, 20335245), (3, 6778415), (5, 4067049), (7, 2905035), (15, 1355683), (21, 968345), (35, 581007), (49, 415005), (73, 278565), (105, 193669), (147, 138335), (219, 92855), (245, 83001), (365, 55713), (379, 53655), (511, 39795), (735, 27667), (1095, 18571), (1137, 17885), (1533, 13265), (1895, 10731), (2555, 7959), (2653, 7665), (3577, 5685)]