21209936

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120511}}^1$

素因数の和:120530

約数の個数: 20

約数和(自身を含む): 44830464

約数和(自身を除く): 23620528

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120511, 241022, 482044, 964088, 1325621, 1928176, 2651242, 5302484, 10604968, 21209936]

約数ペア:

[(1, 21209936), (2, 10604968), (4, 5302484), (8, 2651242), (11, 1928176), (16, 1325621), (22, 964088), (44, 482044), (88, 241022), (176, 120511)]