18970744

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2309}}^1$

素因数の和:2407

約数の個数: 32

約数和(自身を含む): 38808000

約数和(自身を除く): 19837256

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2309, 4108, 4618, 8216, 9236, 18472, 30017, 60034, 120068, 182411, 240136, 364822, 729644, 1459288, 2371343, 4742686, 9485372, 18970744]

約数ペア:

[(1, 18970744), (2, 9485372), (4, 4742686), (8, 2371343), (13, 1459288), (26, 729644), (52, 364822), (79, 240136), (104, 182411), (158, 120068), (316, 60034), (632, 30017), (1027, 18472), (2054, 9236), (2309, 8216), (4108, 4618)]