251355937

素因数分解:

$7^2\times {\mathrm{23}}^2\times {\mathrm{9697}}^1$

素因数の和:9757

約数の個数: 18

約数和(自身を含む): 305690658

約数和(自身を除く): 54334721

約数列:

[1, 7, 23, 49, 161, 529, 1127, 3703, 9697, 25921, 67879, 223031, 475153, 1561217, 5129713, 10928519, 35907991, 251355937]

約数ペア:

[(1, 251355937), (7, 35907991), (23, 10928519), (49, 5129713), (161, 1561217), (529, 475153), (1127, 223031), (3703, 67879), (9697, 25921)]