21108272

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42557}}^1$

素因数の和:42596

約数の個数: 20

約数和(自身を含む): 42217536

約数和(自身を除く): 21109264

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42557, 85114, 170228, 340456, 680912, 1319267, 2638534, 5277068, 10554136, 21108272]

約数ペア:

[(1, 21108272), (2, 10554136), (4, 5277068), (8, 2638534), (16, 1319267), (31, 680912), (62, 340456), (124, 170228), (248, 85114), (496, 42557)]