21961905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5653}}^1$

素因数の和:5705

約数の個数: 32

約数和(自身を含む): 41251584

約数和(自身を除く): 19289679

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5653, 16959, 28265, 39571, 84795, 118713, 197855, 209161, 593565, 627483, 1045805, 1464127, 3137415, 4392381, 7320635, 21961905]

約数ペア:

[(1, 21961905), (3, 7320635), (5, 4392381), (7, 3137415), (15, 1464127), (21, 1045805), (35, 627483), (37, 593565), (105, 209161), (111, 197855), (185, 118713), (259, 84795), (555, 39571), (777, 28265), (1295, 16959), (3885, 5653)]