20260175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 30310560

約数和(自身を除く): 10050385

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 193, 221, 247, 323, 325, 425, 475, 965, 1105, 1235, 1615, 2509, 3281, 3667, 4199, 4825, 5525, 6175, 8075, 12545, 16405, 18335, 20995, 42653, 47671, 62339, 62725, 82025, 91675, 104975, 213265, 238355, 311695, 810407, 1066325, 1191775, 1558475, 4052035, 20260175]

約数ペア:

[(1, 20260175), (5, 4052035), (13, 1558475), (17, 1191775), (19, 1066325), (25, 810407), (65, 311695), (85, 238355), (95, 213265), (193, 104975), (221, 91675), (247, 82025), (323, 62725), (325, 62339), (425, 47671), (475, 42653), (965, 20995), (1105, 18335), (1235, 16405), (1615, 12545), (2509, 8075), (3281, 6175), (3667, 5525), (4199, 4825)]