21121552

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6701}}^1$

素因数の和:6906

約数の個数: 20

約数和(自身を含む): 41136876

約数和(自身を除く): 20015324

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6701, 13402, 26804, 53608, 107216, 1320097, 2640194, 5280388, 10560776, 21121552]

約数ペア:

[(1, 21121552), (2, 10560776), (4, 5280388), (8, 2640194), (16, 1320097), (197, 107216), (394, 53608), (788, 26804), (1576, 13402), (3152, 6701)]