21618045

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20887}}^1$

素因数の和:20921

約数の個数: 24

約数和(自身を含む): 39102336

約数和(自身を除く): 17484291

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20887, 62661, 104435, 187983, 313305, 480401, 939915, 1441203, 2402005, 4323609, 7206015, 21618045]

約数ペア:

[(1, 21618045), (3, 7206015), (5, 4323609), (9, 2402005), (15, 1441203), (23, 939915), (45, 480401), (69, 313305), (115, 187983), (207, 104435), (345, 62661), (1035, 20887)]