21409460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62969}}^1$

素因数の和:62995

約数の個数: 24

約数和(自身を含む): 47605320

約数和(自身を除く): 26195860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62969, 125938, 251876, 314845, 629690, 1070473, 1259380, 2140946, 4281892, 5352365, 10704730, 21409460]

約数ペア:

[(1, 21409460), (2, 10704730), (4, 5352365), (5, 4281892), (10, 2140946), (17, 1259380), (20, 1070473), (34, 629690), (68, 314845), (85, 251876), (170, 125938), (340, 62969)]