208889401

素因数分解:

$7^4\times {\mathrm{19}}^2\times {\mathrm{241}}^1$

素因数の和:307

約数の個数: 30

約数和(自身を含む): 258257802

約数和(自身を除く): 49368401

約数列:

[1, 7, 19, 49, 133, 241, 343, 361, 931, 1687, 2401, 2527, 4579, 6517, 11809, 17689, 32053, 45619, 82663, 87001, 123823, 224371, 578641, 609007, 866761, 1570597, 4263049, 10994179, 29841343, 208889401]

約数ペア:

[(1, 208889401), (7, 29841343), (19, 10994179), (49, 4263049), (133, 1570597), (241, 866761), (343, 609007), (361, 578641), (931, 224371), (1687, 123823), (2401, 87001), (2527, 82663), (4579, 45619), (6517, 32053), (11809, 17689)]