20640376

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{677}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 40191840

約数和(自身を除く): 19551464

約数列:

[1, 2, 4, 8, 37, 74, 103, 148, 206, 296, 412, 677, 824, 1354, 2708, 3811, 5416, 7622, 15244, 25049, 30488, 50098, 69731, 100196, 139462, 200392, 278924, 557848, 2580047, 5160094, 10320188, 20640376]

約数ペア:

[(1, 20640376), (2, 10320188), (4, 5160094), (8, 2580047), (37, 557848), (74, 278924), (103, 200392), (148, 139462), (206, 100196), (296, 69731), (412, 50098), (677, 30488), (824, 25049), (1354, 15244), (2708, 7622), (3811, 5416)]