18536609

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 5977951

約数列:

[1, 7, 13, 19, 71, 91, 133, 151, 247, 497, 923, 1057, 1349, 1729, 1963, 2869, 6461, 9443, 10721, 13741, 17537, 20083, 37297, 75047, 122759, 139373, 203699, 261079, 975611, 1425893, 2648087, 18536609]

約数ペア:

[(1, 18536609), (7, 2648087), (13, 1425893), (19, 975611), (71, 261079), (91, 203699), (133, 139373), (151, 122759), (247, 75047), (497, 37297), (923, 20083), (1057, 17537), (1349, 13741), (1729, 10721), (1963, 9443), (2869, 6461)]