21226515

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1049}}^1$

素因数の和:1147

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15061485

約数列:

[1, 3, 5, 15, 19, 57, 71, 95, 213, 285, 355, 1049, 1065, 1349, 3147, 4047, 5245, 6745, 15735, 19931, 20235, 59793, 74479, 99655, 223437, 298965, 372395, 1117185, 1415101, 4245303, 7075505, 21226515]

約数ペア:

[(1, 21226515), (3, 7075505), (5, 4245303), (15, 1415101), (19, 1117185), (57, 372395), (71, 298965), (95, 223437), (213, 99655), (285, 74479), (355, 59793), (1049, 20235), (1065, 19931), (1349, 15735), (3147, 6745), (4047, 5245)]