20199780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:395

約数の個数: 120

約数和(自身を含む): 65273208

約数和(自身を除く): 45073428

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 81, 90, 108, 111, 135, 148, 162, 180, 185, 222, 270, 324, 333, 337, 370, 405, 444, 540, 555, 666, 674, 740, 810, 999, 1011, 1110, 1332, 1348, 1620, 1665, 1685, 1998, 2022, 2220, 2997, 3033, 3330, 3370, 3996, 4044, 4995, 5055, 5994, 6066, 6660, 6740, 9099, 9990, 10110, 11988, 12132, 12469, 14985, 15165, 18198, 19980, 20220, 24938, 27297, 29970, 30330, 36396, 37407, 45495, 49876, 54594, 59940, 60660, 62345, 74814, 90990, 109188, 112221, 124690, 136485, 149628, 181980, 187035, 224442, 249380, 272970, 336663, 374070, 448884, 545940, 561105, 673326, 748140, 1009989, 1122210, 1346652, 1683315, 2019978, 2244420, 3366630, 4039956, 5049945, 6733260, 10099890, 20199780]

約数ペア:

[(1, 20199780), (2, 10099890), (3, 6733260), (4, 5049945), (5, 4039956), (6, 3366630), (9, 2244420), (10, 2019978), (12, 1683315), (15, 1346652), (18, 1122210), (20, 1009989), (27, 748140), (30, 673326), (36, 561105), (37, 545940), (45, 448884), (54, 374070), (60, 336663), (74, 272970), (81, 249380), (90, 224442), (108, 187035), (111, 181980), (135, 149628), (148, 136485), (162, 124690), (180, 112221), (185, 109188), (222, 90990), (270, 74814), (324, 62345), (333, 60660), (337, 59940), (370, 54594), (405, 49876), (444, 45495), (540, 37407), (555, 36396), (666, 30330), (674, 29970), (740, 27297), (810, 24938), (999, 20220), (1011, 19980), (1110, 18198), (1332, 15165), (1348, 14985), (1620, 12469), (1665, 12132), (1685, 11988), (1998, 10110), (2022, 9990), (2220, 9099), (2997, 6740), (3033, 6660), (3330, 6066), (3370, 5994), (3996, 5055), (4044, 4995)]