28943859

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 48554880

約数和(自身を除く): 19611021

約数列:

[1, 3, 7, 19, 21, 43, 49, 57, 129, 133, 147, 241, 301, 399, 723, 817, 903, 931, 1687, 2107, 2451, 2793, 4579, 5061, 5719, 6321, 10363, 11809, 13737, 17157, 31089, 32053, 35427, 40033, 72541, 96159, 120099, 196897, 217623, 224371, 507787, 590691, 673113, 1378279, 1523361, 4134837, 9647953, 28943859]

約数ペア:

[(1, 28943859), (3, 9647953), (7, 4134837), (19, 1523361), (21, 1378279), (43, 673113), (49, 590691), (57, 507787), (129, 224371), (133, 217623), (147, 196897), (241, 120099), (301, 96159), (399, 72541), (723, 40033), (817, 35427), (903, 32053), (931, 31089), (1687, 17157), (2107, 13737), (2451, 11809), (2793, 10363), (4579, 6321), (5061, 5719)]