21459645

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1321}}^1$

素因数の和:1370

約数の個数: 36

約数和(自身を含む): 39287196

約数和(自身を除く): 17827551

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 361, 855, 1083, 1321, 1805, 3249, 3963, 5415, 6605, 11889, 16245, 19815, 25099, 59445, 75297, 125495, 225891, 376485, 476881, 1129455, 1430643, 2384405, 4291929, 7153215, 21459645]

約数ペア:

[(1, 21459645), (3, 7153215), (5, 4291929), (9, 2384405), (15, 1430643), (19, 1129455), (45, 476881), (57, 376485), (95, 225891), (171, 125495), (285, 75297), (361, 59445), (855, 25099), (1083, 19815), (1321, 16245), (1805, 11889), (3249, 6605), (3963, 5415)]