640905426

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{277}}^1\times {\mathrm{6121}}^1$

素因数の和:6416

約数の個数: 64

約数和(自身を含む): 1633839360

約数和(自身を除く): 992933934

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 277, 378, 554, 831, 1662, 1939, 2493, 3878, 4986, 5817, 6121, 7479, 11634, 12242, 14958, 17451, 18363, 34902, 36726, 42847, 52353, 55089, 85694, 104706, 110178, 128541, 165267, 257082, 330534, 385623, 771246, 1156869, 1695517, 2313738, 3391034, 5086551, 10173102, 11868619, 15259653, 23737238, 30519306, 35605857, 45778959, 71211714, 91557918, 106817571, 213635142, 320452713, 640905426]

約数ペア:

[(1, 640905426), (2, 320452713), (3, 213635142), (6, 106817571), (7, 91557918), (9, 71211714), (14, 45778959), (18, 35605857), (21, 30519306), (27, 23737238), (42, 15259653), (54, 11868619), (63, 10173102), (126, 5086551), (189, 3391034), (277, 2313738), (378, 1695517), (554, 1156869), (831, 771246), (1662, 385623), (1939, 330534), (2493, 257082), (3878, 165267), (4986, 128541), (5817, 110178), (6121, 104706), (7479, 85694), (11634, 55089), (12242, 52353), (14958, 42847), (17451, 36726), (18363, 34902)]