1215661887

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{647}}^1\times {\mathrm{18979}}^1$

素因数の和:19643

約数の個数: 24

約数和(自身を含む): 1918650240

約数和(自身を除く): 702988353

約数列:

[1, 3, 9, 11, 33, 99, 647, 1941, 5823, 7117, 18979, 21351, 56937, 64053, 170811, 208769, 626307, 1878921, 12279413, 36838239, 110514717, 135073543, 405220629, 1215661887]

約数ペア:

[(1, 1215661887), (3, 405220629), (9, 135073543), (11, 110514717), (33, 36838239), (99, 12279413), (647, 1878921), (1941, 626307), (5823, 208769), (7117, 170811), (18979, 64053), (21351, 56937)]