220352080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211877}}^1$

素因数の和:211903

約数の個数: 40

約数和(自身を含む): 551730312

約数和(自身を除く): 331378232

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 211877, 423754, 847508, 1059385, 1695016, 2118770, 2754401, 3390032, 4237540, 5508802, 8475080, 11017604, 13772005, 16950160, 22035208, 27544010, 44070416, 55088020, 110176040, 220352080]

約数ペア:

[(1, 220352080), (2, 110176040), (4, 55088020), (5, 44070416), (8, 27544010), (10, 22035208), (13, 16950160), (16, 13772005), (20, 11017604), (26, 8475080), (40, 5508802), (52, 4237540), (65, 3390032), (80, 2754401), (104, 2118770), (130, 1695016), (208, 1059385), (260, 847508), (520, 423754), (1040, 211877)]