21900615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{401}}^1$

素因数の和:751

約数の個数: 32

約数和(自身を含む): 38437632

約数和(自身を除く): 16537017

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 331, 401, 993, 1203, 1655, 2005, 3641, 4411, 4965, 6015, 10923, 13233, 18205, 22055, 54615, 66165, 132731, 398193, 663655, 1460041, 1990965, 4380123, 7300205, 21900615]

約数ペア:

[(1, 21900615), (3, 7300205), (5, 4380123), (11, 1990965), (15, 1460041), (33, 663655), (55, 398193), (165, 132731), (331, 66165), (401, 54615), (993, 22055), (1203, 18205), (1655, 13233), (2005, 10923), (3641, 6015), (4411, 4965)]