12681765

素因数分解:

$3^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:371

約数の個数: 40

約数和(自身を含む): 22990968

約数和(自身を除く): 10309203

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 173, 181, 405, 519, 543, 865, 905, 1557, 1629, 2595, 2715, 4671, 4887, 7785, 8145, 14013, 14661, 23355, 24435, 31313, 70065, 73305, 93939, 156565, 281817, 469695, 845451, 1409085, 2536353, 4227255, 12681765]

約数ペア:

[(1, 12681765), (3, 4227255), (5, 2536353), (9, 1409085), (15, 845451), (27, 469695), (45, 281817), (81, 156565), (135, 93939), (173, 73305), (181, 70065), (405, 31313), (519, 24435), (543, 23355), (865, 14661), (905, 14013), (1557, 8145), (1629, 7785), (2595, 4887), (2715, 4671)]