20678288

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{677}}^1$

素因数の和:791

約数の個数: 40

約数和(自身を含む): 42372288

約数和(自身を除く): 21694000

約数列:

[1, 2, 4, 8, 16, 23, 46, 83, 92, 166, 184, 332, 368, 664, 677, 1328, 1354, 1909, 2708, 3818, 5416, 7636, 10832, 15272, 15571, 30544, 31142, 56191, 62284, 112382, 124568, 224764, 249136, 449528, 899056, 1292393, 2584786, 5169572, 10339144, 20678288]

約数ペア:

[(1, 20678288), (2, 10339144), (4, 5169572), (8, 2584786), (16, 1292393), (23, 899056), (46, 449528), (83, 249136), (92, 224764), (166, 124568), (184, 112382), (332, 62284), (368, 56191), (664, 31142), (677, 30544), (1328, 15571), (1354, 15272), (1909, 10832), (2708, 7636), (3818, 5416)]