19828315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 27074880

約数和(自身を除く): 7246565

約数列:

[1, 5, 13, 29, 65, 67, 145, 157, 335, 377, 785, 871, 1885, 1943, 2041, 4355, 4553, 9715, 10205, 10519, 22765, 25259, 52595, 59189, 126295, 136747, 295945, 305051, 683735, 1525255, 3965663, 19828315]

約数ペア:

[(1, 19828315), (5, 3965663), (13, 1525255), (29, 683735), (65, 305051), (67, 295945), (145, 136747), (157, 126295), (335, 59189), (377, 52595), (785, 25259), (871, 22765), (1885, 10519), (1943, 10205), (2041, 9715), (4355, 4553)]