21189516

素因数分解:

$2^2\times 3^1\times {\mathrm{137}}^1\times {\mathrm{12889}}^1$

素因数の和:13033

約数の個数: 24

約数和(自身を含む): 49806960

約数和(自身を除く): 28617444

約数列:

[1, 2, 3, 4, 6, 12, 137, 274, 411, 548, 822, 1644, 12889, 25778, 38667, 51556, 77334, 154668, 1765793, 3531586, 5297379, 7063172, 10594758, 21189516]

約数ペア:

[(1, 21189516), (2, 10594758), (3, 7063172), (4, 5297379), (6, 3531586), (12, 1765793), (137, 154668), (274, 77334), (411, 51556), (548, 38667), (822, 25778), (1644, 12889)]