31881556

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 68947200

約数和(自身を除く): 37065644

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 71, 79, 98, 116, 142, 158, 196, 203, 284, 316, 406, 497, 553, 812, 994, 1106, 1421, 1988, 2059, 2212, 2291, 2842, 3479, 3871, 4118, 4582, 5609, 5684, 6958, 7742, 8236, 9164, 11218, 13916, 14413, 15484, 16037, 22436, 28826, 32074, 39263, 57652, 64148, 78526, 100891, 112259, 157052, 162661, 201782, 224518, 274841, 325322, 403564, 449036, 549682, 650644, 1099364, 1138627, 2277254, 4554508, 7970389, 15940778, 31881556]

約数ペア:

[(1, 31881556), (2, 15940778), (4, 7970389), (7, 4554508), (14, 2277254), (28, 1138627), (29, 1099364), (49, 650644), (58, 549682), (71, 449036), (79, 403564), (98, 325322), (116, 274841), (142, 224518), (158, 201782), (196, 162661), (203, 157052), (284, 112259), (316, 100891), (406, 78526), (497, 64148), (553, 57652), (812, 39263), (994, 32074), (1106, 28826), (1421, 22436), (1988, 16037), (2059, 15484), (2212, 14413), (2291, 13916), (2842, 11218), (3479, 9164), (3871, 8236), (4118, 7742), (4582, 6958), (5609, 5684)]