20321355

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{631}}^1$

素因数の和:771

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 14261685

約数列:

[1, 3, 5, 15, 19, 57, 95, 113, 285, 339, 565, 631, 1695, 1893, 2147, 3155, 6441, 9465, 10735, 11989, 32205, 35967, 59945, 71303, 179835, 213909, 356515, 1069545, 1354757, 4064271, 6773785, 20321355]

約数ペア:

[(1, 20321355), (3, 6773785), (5, 4064271), (15, 1354757), (19, 1069545), (57, 356515), (95, 213909), (113, 179835), (285, 71303), (339, 59945), (565, 35967), (631, 32205), (1695, 11989), (1893, 10735), (2147, 9465), (3155, 6441)]