20397295

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:195

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 6455825

約数列:

[1, 5, 29, 41, 47, 73, 145, 205, 235, 365, 1189, 1363, 1927, 2117, 2993, 3431, 5945, 6815, 9635, 10585, 14965, 17155, 55883, 86797, 99499, 140671, 279415, 433985, 497495, 703355, 4079459, 20397295]

約数ペア:

[(1, 20397295), (5, 4079459), (29, 703355), (41, 497495), (47, 433985), (73, 279415), (145, 140671), (205, 99499), (235, 86797), (365, 55883), (1189, 17155), (1363, 14965), (1927, 10585), (2117, 9635), (2993, 6815), (3431, 5945)]