18680705

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 25660800

約数和(自身を除く): 6980095

約数列:

[1, 5, 17, 19, 43, 85, 95, 215, 269, 323, 731, 817, 1345, 1615, 3655, 4085, 4573, 5111, 11567, 13889, 22865, 25555, 57835, 69445, 86887, 196639, 219773, 434435, 983195, 1098865, 3736141, 18680705]

約数ペア:

[(1, 18680705), (5, 3736141), (17, 1098865), (19, 983195), (43, 434435), (85, 219773), (95, 196639), (215, 86887), (269, 69445), (323, 57835), (731, 25555), (817, 22865), (1345, 13889), (1615, 11567), (3655, 5111), (4085, 4573)]