20259665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 27599616

約数和(自身を除く): 7339951

約数列:

[1, 5, 17, 23, 43, 85, 115, 215, 241, 391, 731, 989, 1205, 1955, 3655, 4097, 4945, 5543, 10363, 16813, 20485, 27715, 51815, 84065, 94231, 176171, 238349, 471155, 880855, 1191745, 4051933, 20259665]

約数ペア:

[(1, 20259665), (5, 4051933), (17, 1191745), (23, 880855), (43, 471155), (85, 238349), (115, 176171), (215, 94231), (241, 84065), (391, 51815), (731, 27715), (989, 20485), (1205, 16813), (1955, 10363), (3655, 5543), (4097, 4945)]