18571580

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{859}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 41610240

約数和(自身を除く): 23038660

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 859, 940, 1081, 1718, 2162, 3436, 4295, 4324, 5405, 8590, 10810, 17180, 19757, 21620, 39514, 40373, 79028, 80746, 98785, 161492, 197570, 201865, 395140, 403730, 807460, 928579, 1857158, 3714316, 4642895, 9285790, 18571580]

約数ペア:

[(1, 18571580), (2, 9285790), (4, 4642895), (5, 3714316), (10, 1857158), (20, 928579), (23, 807460), (46, 403730), (47, 395140), (92, 201865), (94, 197570), (115, 161492), (188, 98785), (230, 80746), (235, 79028), (460, 40373), (470, 39514), (859, 21620), (940, 19757), (1081, 17180), (1718, 10810), (2162, 8590), (3436, 5405), (4295, 4324)]