138919885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2161}}^1$

素因数の和:2245

約数の個数: 32

約数和(自身を含む): 191778048

約数和(自身を除く): 52858163

約数列:

[1, 5, 13, 23, 43, 65, 115, 215, 299, 559, 989, 1495, 2161, 2795, 4945, 10805, 12857, 28093, 49703, 64285, 92923, 140465, 248515, 464615, 646139, 1207999, 2137229, 3230695, 6039995, 10686145, 27783977, 138919885]

約数ペア:

[(1, 138919885), (5, 27783977), (13, 10686145), (23, 6039995), (43, 3230695), (65, 2137229), (115, 1207999), (215, 646139), (299, 464615), (559, 248515), (989, 140465), (1495, 92923), (2161, 64285), (2795, 49703), (4945, 28093), (10805, 12857)]