2028049640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{461}}^1\times {\mathrm{1009}}^1$

素因数の和:1590

約数の個数: 64

約数和(自身を含む): 4619538000

約数和(自身を除く): 2591488360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 461, 545, 872, 922, 1009, 1090, 1844, 2018, 2180, 2305, 3688, 4036, 4360, 4610, 5045, 8072, 9220, 10090, 18440, 20180, 40360, 50249, 100498, 109981, 200996, 219962, 251245, 401992, 439924, 465149, 502490, 549905, 879848, 930298, 1004980, 1099810, 1860596, 2009960, 2199620, 2325745, 3721192, 4399240, 4651490, 9302980, 18605960, 50701241, 101402482, 202804964, 253506205, 405609928, 507012410, 1014024820, 2028049640]

約数ペア:

[(1, 2028049640), (2, 1014024820), (4, 507012410), (5, 405609928), (8, 253506205), (10, 202804964), (20, 101402482), (40, 50701241), (109, 18605960), (218, 9302980), (436, 4651490), (461, 4399240), (545, 3721192), (872, 2325745), (922, 2199620), (1009, 2009960), (1090, 1860596), (1844, 1099810), (2018, 1004980), (2180, 930298), (2305, 879848), (3688, 549905), (4036, 502490), (4360, 465149), (4610, 439924), (5045, 401992), (8072, 251245), (9220, 219962), (10090, 200996), (18440, 109981), (20180, 100498), (40360, 50249)]