21697460

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{10139}}^1$

素因数の和:10255

約数の個数: 24

約数和(自身を含む): 45995040

約数和(自身を除く): 24297580

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 10139, 20278, 40556, 50695, 101390, 202780, 1084873, 2169746, 4339492, 5424365, 10848730, 21697460]

約数ペア:

[(1, 21697460), (2, 10848730), (4, 5424365), (5, 4339492), (10, 2169746), (20, 1084873), (107, 202780), (214, 101390), (428, 50695), (535, 40556), (1070, 20278), (2140, 10139)]