21409685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{433}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 8588395

約数列:

[1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 433, 899, 1595, 1705, 2165, 4495, 4763, 9889, 12557, 13423, 23815, 49445, 62785, 67115, 138127, 147653, 389267, 690635, 738265, 1946335, 4281937, 21409685]

約数ペア:

[(1, 21409685), (5, 4281937), (11, 1946335), (29, 738265), (31, 690635), (55, 389267), (145, 147653), (155, 138127), (319, 67115), (341, 62785), (433, 49445), (899, 23815), (1595, 13423), (1705, 12557), (2165, 9889), (4495, 4763)]