20851830

素因数分解:

$2^1\times 3^5\times 5^1\times {\mathrm{8581}}^1$

素因数の和:8603

約数の個数: 48

約数和(自身を含む): 56229264

約数和(自身を除く): 35377434

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 405, 486, 810, 1215, 2430, 8581, 17162, 25743, 42905, 51486, 77229, 85810, 128715, 154458, 231687, 257430, 386145, 463374, 695061, 772290, 1158435, 1390122, 2085183, 2316870, 3475305, 4170366, 6950610, 10425915, 20851830]

約数ペア:

[(1, 20851830), (2, 10425915), (3, 6950610), (5, 4170366), (6, 3475305), (9, 2316870), (10, 2085183), (15, 1390122), (18, 1158435), (27, 772290), (30, 695061), (45, 463374), (54, 386145), (81, 257430), (90, 231687), (135, 154458), (162, 128715), (243, 85810), (270, 77229), (405, 51486), (486, 42905), (810, 25743), (1215, 17162), (2430, 8581)]