20008473980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1357427}}^1$

素因数の和:1357514

約数の個数: 48

約数和(自身を含む): 46521772416

約数和(自身を除く): 26513298436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1474, 2948, 3685, 7370, 14740, 1357427, 2714854, 5429708, 6787135, 13574270, 14931697, 27148540, 29863394, 59726788, 74658485, 90947609, 149316970, 181895218, 298633940, 363790436, 454738045, 909476090, 1000423699, 1818952180, 2000847398, 4001694796, 5002118495, 10004236990, 20008473980]

約数ペア:

[(1, 20008473980), (2, 10004236990), (4, 5002118495), (5, 4001694796), (10, 2000847398), (11, 1818952180), (20, 1000423699), (22, 909476090), (44, 454738045), (55, 363790436), (67, 298633940), (110, 181895218), (134, 149316970), (220, 90947609), (268, 74658485), (335, 59726788), (670, 29863394), (737, 27148540), (1340, 14931697), (1474, 13574270), (2948, 6787135), (3685, 5429708), (7370, 2714854), (14740, 1357427)]