19213025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1907}}^1$

素因数の和:1961

約数の個数: 24

約数和(自身を含む): 26498304

約数和(自身を除く): 7285279

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 1907, 2015, 9535, 10075, 24791, 47675, 59117, 123955, 295585, 619775, 768521, 1477925, 3842605, 19213025]

約数ペア:

[(1, 19213025), (5, 3842605), (13, 1477925), (25, 768521), (31, 619775), (65, 295585), (155, 123955), (325, 59117), (403, 47675), (775, 24791), (1907, 10075), (2015, 9535)]