21548210

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{373}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 39988080

約数和(自身を除く): 18439870

約数列:

[1, 2, 5, 10, 53, 106, 109, 218, 265, 373, 530, 545, 746, 1090, 1865, 3730, 5777, 11554, 19769, 28885, 39538, 40657, 57770, 81314, 98845, 197690, 203285, 406570, 2154821, 4309642, 10774105, 21548210]

約数ペア:

[(1, 21548210), (2, 10774105), (5, 4309642), (10, 2154821), (53, 406570), (106, 203285), (109, 197690), (218, 98845), (265, 81314), (373, 57770), (530, 40657), (545, 39538), (746, 28885), (1090, 19769), (1865, 11554), (3730, 5777)]