291236840

素因数分解:

$2^3\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{6449}}^1$

素因数の和:7589

約数の個数: 32

約数和(自身を含む): 655965000

約数和(自身を除く): 364728160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1129, 2258, 4516, 5645, 6449, 9032, 11290, 12898, 22580, 25796, 32245, 45160, 51592, 64490, 128980, 257960, 7280921, 14561842, 29123684, 36404605, 58247368, 72809210, 145618420, 291236840]

約数ペア:

[(1, 291236840), (2, 145618420), (4, 72809210), (5, 58247368), (8, 36404605), (10, 29123684), (20, 14561842), (40, 7280921), (1129, 257960), (2258, 128980), (4516, 64490), (5645, 51592), (6449, 45160), (9032, 32245), (11290, 25796), (12898, 22580)]