19890756

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 52492440

約数和(自身を除く): 32601684

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 109, 111, 137, 148, 218, 222, 274, 327, 333, 411, 436, 444, 548, 654, 666, 822, 981, 1233, 1308, 1332, 1644, 1962, 2466, 3924, 4033, 4932, 5069, 8066, 10138, 12099, 14933, 15207, 16132, 20276, 24198, 29866, 30414, 36297, 44799, 45621, 48396, 59732, 60828, 72594, 89598, 91242, 134397, 145188, 179196, 182484, 268794, 537588, 552521, 1105042, 1657563, 2210084, 3315126, 4972689, 6630252, 9945378, 19890756]

約数ペア:

[(1, 19890756), (2, 9945378), (3, 6630252), (4, 4972689), (6, 3315126), (9, 2210084), (12, 1657563), (18, 1105042), (36, 552521), (37, 537588), (74, 268794), (109, 182484), (111, 179196), (137, 145188), (148, 134397), (218, 91242), (222, 89598), (274, 72594), (327, 60828), (333, 59732), (411, 48396), (436, 45621), (444, 44799), (548, 36297), (654, 30414), (666, 29866), (822, 24198), (981, 20276), (1233, 16132), (1308, 15207), (1332, 14933), (1644, 12099), (1962, 10138), (2466, 8066), (3924, 5069), (4033, 4932)]