19509462505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{557}}^1\times {\mathrm{4243}}^1$

素因数の和:4945

約数の個数: 32

約数和(自身を含む): 25462370304

約数和(自身を除く): 5952907799

約数列:

[1, 5, 13, 65, 127, 557, 635, 1651, 2785, 4243, 7241, 8255, 21215, 36205, 55159, 70739, 275795, 353695, 538861, 919607, 2363351, 2694305, 4598035, 7005193, 11816755, 30723563, 35025965, 153617815, 300145577, 1500727885, 3901892501, 19509462505]

約数ペア:

[(1, 19509462505), (5, 3901892501), (13, 1500727885), (65, 300145577), (127, 153617815), (557, 35025965), (635, 30723563), (1651, 11816755), (2785, 7005193), (4243, 4598035), (7241, 2694305), (8255, 2363351), (21215, 919607), (36205, 538861), (55159, 353695), (70739, 275795)]