20372859

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 33755904

約数和(自身を除く): 13383045

約数列:

[1, 3, 9, 13, 31, 39, 41, 93, 117, 123, 137, 279, 369, 403, 411, 533, 1209, 1233, 1271, 1599, 1781, 3627, 3813, 4247, 4797, 5343, 5617, 11439, 12741, 16029, 16523, 16851, 38223, 49569, 50553, 55211, 73021, 148707, 165633, 174127, 219063, 496899, 522381, 657189, 1567143, 2263651, 6790953, 20372859]

約数ペア:

[(1, 20372859), (3, 6790953), (9, 2263651), (13, 1567143), (31, 657189), (39, 522381), (41, 496899), (93, 219063), (117, 174127), (123, 165633), (137, 148707), (279, 73021), (369, 55211), (403, 50553), (411, 49569), (533, 38223), (1209, 16851), (1233, 16523), (1271, 16029), (1599, 12741), (1781, 11439), (3627, 5617), (3813, 5343), (4247, 4797)]