21030165

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{521}}^1$

素因数の和:571

約数の個数: 64

約数和(自身を含む): 42094080

約数和(自身を除く): 21063915

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 115, 117, 135, 195, 207, 299, 345, 351, 521, 585, 621, 897, 1035, 1495, 1563, 1755, 2605, 2691, 3105, 4485, 4689, 6773, 7815, 8073, 11983, 13455, 14067, 20319, 23445, 33865, 35949, 40365, 59915, 60957, 70335, 101595, 107847, 155779, 179745, 182871, 304785, 323541, 467337, 539235, 778895, 914355, 1402011, 1617705, 2336685, 4206033, 7010055, 21030165]

約数ペア:

[(1, 21030165), (3, 7010055), (5, 4206033), (9, 2336685), (13, 1617705), (15, 1402011), (23, 914355), (27, 778895), (39, 539235), (45, 467337), (65, 323541), (69, 304785), (115, 182871), (117, 179745), (135, 155779), (195, 107847), (207, 101595), (299, 70335), (345, 60957), (351, 59915), (521, 40365), (585, 35949), (621, 33865), (897, 23445), (1035, 20319), (1495, 14067), (1563, 13455), (1755, 11983), (2605, 8073), (2691, 7815), (3105, 6773), (4485, 4689)]