30487720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 71208720

約数和(自身を除く): 40721000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 73, 106, 146, 197, 212, 265, 292, 365, 394, 424, 530, 584, 730, 788, 985, 1060, 1460, 1576, 1970, 2120, 2920, 3869, 3940, 7738, 7880, 10441, 14381, 15476, 19345, 20882, 28762, 30952, 38690, 41764, 52205, 57524, 71905, 77380, 83528, 104410, 115048, 143810, 154760, 208820, 287620, 417640, 575240, 762193, 1524386, 3048772, 3810965, 6097544, 7621930, 15243860, 30487720]

約数ペア:

[(1, 30487720), (2, 15243860), (4, 7621930), (5, 6097544), (8, 3810965), (10, 3048772), (20, 1524386), (40, 762193), (53, 575240), (73, 417640), (106, 287620), (146, 208820), (197, 154760), (212, 143810), (265, 115048), (292, 104410), (365, 83528), (394, 77380), (424, 71905), (530, 57524), (584, 52205), (730, 41764), (788, 38690), (985, 30952), (1060, 28762), (1460, 20882), (1576, 19345), (1970, 15476), (2120, 14381), (2920, 10441), (3869, 7880), (3940, 7738)]