20901908

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{307381}}^1$

素因数の和:307402

約数の個数: 12

約数和(自身を含む): 38730132

約数和(自身を除く): 17828224

約数列:

[1, 2, 4, 17, 34, 68, 307381, 614762, 1229524, 5225477, 10450954, 20901908]

約数ペア:

[(1, 20901908), (2, 10450954), (4, 5225477), (17, 1229524), (34, 614762), (68, 307381)]