20684970

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25537}}^1$

素因数の和:25556

約数の個数: 40

約数和(自身を含む): 55621764

約数和(自身を除く): 34936794

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25537, 51074, 76611, 127685, 153222, 229833, 255370, 383055, 459666, 689499, 766110, 1149165, 1378998, 2068497, 2298330, 3447495, 4136994, 6894990, 10342485, 20684970]

約数ペア:

[(1, 20684970), (2, 10342485), (3, 6894990), (5, 4136994), (6, 3447495), (9, 2298330), (10, 2068497), (15, 1378998), (18, 1149165), (27, 766110), (30, 689499), (45, 459666), (54, 383055), (81, 255370), (90, 229833), (135, 153222), (162, 127685), (270, 76611), (405, 51074), (810, 25537)]