20118800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:157

約数の個数: 120

約数和(自身を含む): 53762184

約数和(自身を除く): 33643384

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 53, 65, 73, 80, 100, 104, 106, 130, 146, 200, 208, 212, 260, 265, 292, 325, 365, 400, 424, 520, 530, 584, 650, 689, 730, 848, 949, 1040, 1060, 1168, 1300, 1325, 1378, 1460, 1825, 1898, 2120, 2600, 2650, 2756, 2920, 3445, 3650, 3796, 3869, 4240, 4745, 5200, 5300, 5512, 5840, 6890, 7300, 7592, 7738, 9490, 10600, 11024, 13780, 14600, 15184, 15476, 17225, 18980, 19345, 21200, 23725, 27560, 29200, 30952, 34450, 37960, 38690, 47450, 50297, 55120, 61904, 68900, 75920, 77380, 94900, 96725, 100594, 137800, 154760, 189800, 193450, 201188, 251485, 275600, 309520, 379600, 386900, 402376, 502970, 773800, 804752, 1005940, 1257425, 1547600, 2011880, 2514850, 4023760, 5029700, 10059400, 20118800]

約数ペア:

[(1, 20118800), (2, 10059400), (4, 5029700), (5, 4023760), (8, 2514850), (10, 2011880), (13, 1547600), (16, 1257425), (20, 1005940), (25, 804752), (26, 773800), (40, 502970), (50, 402376), (52, 386900), (53, 379600), (65, 309520), (73, 275600), (80, 251485), (100, 201188), (104, 193450), (106, 189800), (130, 154760), (146, 137800), (200, 100594), (208, 96725), (212, 94900), (260, 77380), (265, 75920), (292, 68900), (325, 61904), (365, 55120), (400, 50297), (424, 47450), (520, 38690), (530, 37960), (584, 34450), (650, 30952), (689, 29200), (730, 27560), (848, 23725), (949, 21200), (1040, 19345), (1060, 18980), (1168, 17225), (1300, 15476), (1325, 15184), (1378, 14600), (1460, 13780), (1825, 11024), (1898, 10600), (2120, 9490), (2600, 7738), (2650, 7592), (2756, 7300), (2920, 6890), (3445, 5840), (3650, 5512), (3796, 5300), (3869, 5200), (4240, 4745)]