278080543

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{641}}^1$

素因数の和:835

約数の個数: 24

約数和(自身を含む): 321441696

約数和(自身を除く): 43361153

約数列:

[1, 13, 17, 151, 169, 221, 641, 1963, 2567, 2873, 8333, 10897, 25519, 33371, 96791, 108329, 141661, 433823, 1258283, 1645447, 1841593, 16357679, 21390811, 278080543]

約数ペア:

[(1, 278080543), (13, 21390811), (17, 16357679), (151, 1841593), (169, 1645447), (221, 1258283), (641, 433823), (1963, 141661), (2567, 108329), (2873, 96791), (8333, 33371), (10897, 25519)]