21966295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 30506112

約数和(自身を除く): 8539817

約数列:

[1, 5, 13, 17, 65, 85, 103, 193, 221, 515, 965, 1105, 1339, 1751, 2509, 3281, 6695, 8755, 12545, 16405, 19879, 22763, 42653, 99395, 113815, 213265, 258427, 337943, 1292135, 1689715, 4393259, 21966295]

約数ペア:

[(1, 21966295), (5, 4393259), (13, 1689715), (17, 1292135), (65, 337943), (85, 258427), (103, 213265), (193, 113815), (221, 99395), (515, 42653), (965, 22763), (1105, 19879), (1339, 16405), (1751, 12545), (2509, 8755), (3281, 6695)]