21230755

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1609}}^1$

素因数の和:1663

約数の個数: 32

約数和(自身を含む): 32457600

約数和(自身を除く): 11226845

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1609, 1885, 2639, 8045, 11263, 13195, 20917, 46661, 56315, 104585, 146419, 233305, 326627, 606593, 732095, 1633135, 3032965, 4246151, 21230755]

約数ペア:

[(1, 21230755), (5, 4246151), (7, 3032965), (13, 1633135), (29, 732095), (35, 606593), (65, 326627), (91, 233305), (145, 146419), (203, 104585), (377, 56315), (455, 46661), (1015, 20917), (1609, 13195), (1885, 11263), (2639, 8045)]