81490396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 158054400

約数和(自身を除く): 76564004

約数列:

[1, 2, 4, 13, 26, 52, 79, 83, 158, 166, 239, 316, 332, 478, 956, 1027, 1079, 2054, 2158, 3107, 4108, 4316, 6214, 6557, 12428, 13114, 18881, 19837, 26228, 37762, 39674, 75524, 79348, 85241, 170482, 245453, 257881, 340964, 490906, 515762, 981812, 1031524, 1567123, 3134246, 6268492, 20372599, 40745198, 81490396]

約数ペア:

[(1, 81490396), (2, 40745198), (4, 20372599), (13, 6268492), (26, 3134246), (52, 1567123), (79, 1031524), (83, 981812), (158, 515762), (166, 490906), (239, 340964), (316, 257881), (332, 245453), (478, 170482), (956, 85241), (1027, 79348), (1079, 75524), (2054, 39674), (2158, 37762), (3107, 26228), (4108, 19837), (4316, 18881), (6214, 13114), (6557, 12428)]