18840804980

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{919}}^1\times {\mathrm{4289}}^1$

素因数の和:5456

約数の個数: 48

約数和(自身を含む): 39783744000

約数和(自身を除く): 20942939020

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 919, 956, 1195, 1838, 2390, 3676, 4289, 4595, 4780, 8578, 9190, 17156, 18380, 21445, 42890, 85780, 219641, 439282, 878564, 1025071, 1098205, 2050142, 2196410, 3941591, 4100284, 4392820, 5125355, 7883182, 10250710, 15766364, 19707955, 20501420, 39415910, 78831820, 942040249, 1884080498, 3768160996, 4710201245, 9420402490, 18840804980]

約数ペア:

[(1, 18840804980), (2, 9420402490), (4, 4710201245), (5, 3768160996), (10, 1884080498), (20, 942040249), (239, 78831820), (478, 39415910), (919, 20501420), (956, 19707955), (1195, 15766364), (1838, 10250710), (2390, 7883182), (3676, 5125355), (4289, 4392820), (4595, 4100284), (4780, 3941591), (8578, 2196410), (9190, 2050142), (17156, 1098205), (18380, 1025071), (21445, 878564), (42890, 439282), (85780, 219641)]