28728040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 71280000

約数和(自身を除く): 42551960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 436, 440, 545, 599, 872, 1090, 1198, 1199, 2180, 2396, 2398, 2995, 4360, 4792, 4796, 5990, 5995, 6589, 9592, 11980, 11990, 13178, 23960, 23980, 26356, 32945, 47960, 52712, 65291, 65890, 130582, 131780, 261164, 263560, 326455, 522328, 652910, 718201, 1305820, 1436402, 2611640, 2872804, 3591005, 5745608, 7182010, 14364020, 28728040]

約数ペア:

[(1, 28728040), (2, 14364020), (4, 7182010), (5, 5745608), (8, 3591005), (10, 2872804), (11, 2611640), (20, 1436402), (22, 1305820), (40, 718201), (44, 652910), (55, 522328), (88, 326455), (109, 263560), (110, 261164), (218, 131780), (220, 130582), (436, 65890), (440, 65291), (545, 52712), (599, 47960), (872, 32945), (1090, 26356), (1198, 23980), (1199, 23960), (2180, 13178), (2396, 11990), (2398, 11980), (2995, 9592), (4360, 6589), (4792, 5995), (4796, 5990)]