21850108

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24114692

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 71, 116, 142, 203, 284, 379, 406, 497, 758, 812, 994, 1516, 1988, 2059, 2653, 4118, 5306, 8236, 10612, 10991, 14413, 21982, 26909, 28826, 43964, 53818, 57652, 76937, 107636, 153874, 188363, 307748, 376726, 753452, 780361, 1560722, 3121444, 5462527, 10925054, 21850108]

約数ペア:

[(1, 21850108), (2, 10925054), (4, 5462527), (7, 3121444), (14, 1560722), (28, 780361), (29, 753452), (58, 376726), (71, 307748), (116, 188363), (142, 153874), (203, 107636), (284, 76937), (379, 57652), (406, 53818), (497, 43964), (758, 28826), (812, 26909), (994, 21982), (1516, 14413), (1988, 10991), (2059, 10612), (2653, 8236), (4118, 5306)]