21898980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121661}}^1$

素因数の和:121676

約数の個数: 36

約数和(自身を含む): 66427452

約数和(自身を除く): 44528472

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121661, 243322, 364983, 486644, 608305, 729966, 1094949, 1216610, 1459932, 1824915, 2189898, 2433220, 3649830, 4379796, 5474745, 7299660, 10949490, 21898980]

約数ペア:

[(1, 21898980), (2, 10949490), (3, 7299660), (4, 5474745), (5, 4379796), (6, 3649830), (9, 2433220), (10, 2189898), (12, 1824915), (15, 1459932), (18, 1216610), (20, 1094949), (30, 729966), (36, 608305), (45, 486644), (60, 364983), (90, 243322), (180, 121661)]