21618440

素因数分解:

$2^3\times 5^1\times {\mathrm{540461}}^1$

素因数の和:540472

約数の個数: 16

約数和(自身を含む): 48641580

約数和(自身を除く): 27023140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540461, 1080922, 2161844, 2702305, 4323688, 5404610, 10809220, 21618440]

約数ペア:

[(1, 21618440), (2, 10809220), (4, 5404610), (5, 4323688), (8, 2702305), (10, 2161844), (20, 1080922), (40, 540461)]