20131721555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{742457}}^1$

素因数の和:742519

約数の個数: 32

約数和(自身を含む): 28866767040

約数和(自身を除く): 8735045485

約数列:

[1, 5, 11, 17, 29, 55, 85, 145, 187, 319, 493, 935, 1595, 2465, 5423, 27115, 742457, 3712285, 8167027, 12621769, 21531253, 40835135, 63108845, 107656265, 138839459, 236843783, 366031301, 694197295, 1184218915, 1830156505, 4026344311, 20131721555]

約数ペア:

[(1, 20131721555), (5, 4026344311), (11, 1830156505), (17, 1184218915), (29, 694197295), (55, 366031301), (85, 236843783), (145, 138839459), (187, 107656265), (319, 63108845), (493, 40835135), (935, 21531253), (1595, 12621769), (2465, 8167027), (5423, 3712285), (27115, 742457)]