20729345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1625

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 10962175

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1571, 1885, 2639, 7855, 10997, 13195, 20423, 45559, 54985, 102115, 142961, 227795, 318913, 592267, 714805, 1594565, 2961335, 4145869, 20729345]

約数ペア:

[(1, 20729345), (5, 4145869), (7, 2961335), (13, 1594565), (29, 714805), (35, 592267), (65, 318913), (91, 227795), (145, 142961), (203, 102115), (377, 54985), (455, 45559), (1015, 20423), (1571, 13195), (1885, 10997), (2639, 7855)]