20408830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4243}}^1$

素因数の和:4300

約数の個数: 32

約数和(自身を含む): 40640544

約数和(自身を除く): 20231714

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4243, 4810, 8486, 21215, 42430, 55159, 110318, 156991, 275795, 313982, 551590, 784955, 1569910, 2040883, 4081766, 10204415, 20408830]

約数ペア:

[(1, 20408830), (2, 10204415), (5, 4081766), (10, 2040883), (13, 1569910), (26, 784955), (37, 551590), (65, 313982), (74, 275795), (130, 156991), (185, 110318), (370, 55159), (481, 42430), (962, 21215), (2405, 8486), (4243, 4810)]