20802621

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 33401088

約数和(自身を除く): 12598467

約数列:

[1, 3, 7, 21, 37, 41, 111, 123, 259, 287, 653, 777, 861, 1517, 1959, 4551, 4571, 10619, 13713, 24161, 26773, 31857, 72483, 80319, 169127, 187411, 507381, 562233, 990601, 2971803, 6934207, 20802621]

約数ペア:

[(1, 20802621), (3, 6934207), (7, 2971803), (21, 990601), (37, 562233), (41, 507381), (111, 187411), (123, 169127), (259, 80319), (287, 72483), (653, 31857), (777, 26773), (861, 24161), (1517, 13713), (1959, 10619), (4551, 4571)]