21052784

素因数分解:

$2^4\times {\mathrm{83}}^2\times {\mathrm{191}}^1$

素因数の和:365

約数の個数: 30

約数和(自身を含む): 41503296

約数和(自身を除く): 20450512

約数列:

[1, 2, 4, 8, 16, 83, 166, 191, 332, 382, 664, 764, 1328, 1528, 3056, 6889, 13778, 15853, 27556, 31706, 55112, 63412, 110224, 126824, 253648, 1315799, 2631598, 5263196, 10526392, 21052784]

約数ペア:

[(1, 21052784), (2, 10526392), (4, 5263196), (8, 2631598), (16, 1315799), (83, 253648), (166, 126824), (191, 110224), (332, 63412), (382, 55112), (664, 31706), (764, 27556), (1328, 15853), (1528, 13778), (3056, 6889)]