195891220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{199889}}^1$

素因数の和:199912

約数の個数: 36

約数和(自身を含む): 478536660

約数和(自身を除く): 282645440

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 199889, 399778, 799556, 999445, 1399223, 1998890, 2798446, 3997780, 5596892, 6996115, 9794561, 13992230, 19589122, 27984460, 39178244, 48972805, 97945610, 195891220]

約数ペア:

[(1, 195891220), (2, 97945610), (4, 48972805), (5, 39178244), (7, 27984460), (10, 19589122), (14, 13992230), (20, 9794561), (28, 6996115), (35, 5596892), (49, 3997780), (70, 2798446), (98, 1998890), (140, 1399223), (196, 999445), (245, 799556), (490, 399778), (980, 199889)]