640659852

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{16193}}^1$

素因数の和:16367

約数の個数: 72

約数和(自身を含む): 1862698656

約数和(自身を除く): 1222038804

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 157, 252, 314, 471, 628, 942, 1099, 1413, 1884, 2198, 2826, 3297, 4396, 5652, 6594, 9891, 13188, 16193, 19782, 32386, 39564, 48579, 64772, 97158, 113351, 145737, 194316, 226702, 291474, 340053, 453404, 582948, 680106, 1020159, 1360212, 2040318, 2542301, 4080636, 5084602, 7626903, 10169204, 15253806, 17796107, 22880709, 30507612, 35592214, 45761418, 53388321, 71184428, 91522836, 106776642, 160164963, 213553284, 320329926, 640659852]

約数ペア:

[(1, 640659852), (2, 320329926), (3, 213553284), (4, 160164963), (6, 106776642), (7, 91522836), (9, 71184428), (12, 53388321), (14, 45761418), (18, 35592214), (21, 30507612), (28, 22880709), (36, 17796107), (42, 15253806), (63, 10169204), (84, 7626903), (126, 5084602), (157, 4080636), (252, 2542301), (314, 2040318), (471, 1360212), (628, 1020159), (942, 680106), (1099, 582948), (1413, 453404), (1884, 340053), (2198, 291474), (2826, 226702), (3297, 194316), (4396, 145737), (5652, 113351), (6594, 97158), (9891, 64772), (13188, 48579), (16193, 39564), (19782, 32386)]