20389687720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17577317}}^1$

素因数の和:17577357

約数の個数: 32

約数和(自身を含む): 47458758600

約数和(自身を除く): 27069070880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17577317, 35154634, 70309268, 87886585, 140618536, 175773170, 351546340, 509742193, 703092680, 1019484386, 2038968772, 2548710965, 4077937544, 5097421930, 10194843860, 20389687720]

約数ペア:

[(1, 20389687720), (2, 10194843860), (4, 5097421930), (5, 4077937544), (8, 2548710965), (10, 2038968772), (20, 1019484386), (29, 703092680), (40, 509742193), (58, 351546340), (116, 175773170), (145, 140618536), (232, 87886585), (290, 70309268), (580, 35154634), (1160, 17577317)]