261636405

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{3323}}^1$

素因数の和:3541

約数の個数: 32

約数和(自身を含む): 435576960

約数和(自身を除く): 173940555

約数列:

[1, 3, 5, 15, 29, 87, 145, 181, 435, 543, 905, 2715, 3323, 5249, 9969, 15747, 16615, 26245, 49845, 78735, 96367, 289101, 481835, 601463, 1445505, 1804389, 3007315, 9021945, 17442427, 52327281, 87212135, 261636405]

約数ペア:

[(1, 261636405), (3, 87212135), (5, 52327281), (15, 17442427), (29, 9021945), (87, 3007315), (145, 1804389), (181, 1445505), (435, 601463), (543, 481835), (905, 289101), (2715, 96367), (3323, 78735), (5249, 49845), (9969, 26245), (15747, 16615)]