90131678

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{269}}^1$

素因数の和:561

約数の個数: 48

約数和(自身を含む): 170644320

約数和(自身を除く): 80512642

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 263, 269, 526, 538, 637, 1274, 1841, 1883, 3419, 3497, 3682, 3766, 6838, 6994, 12887, 13181, 23933, 24479, 25774, 26362, 47866, 48958, 70747, 141494, 167531, 171353, 335062, 342706, 495229, 919711, 990458, 1839422, 3466603, 6437977, 6933206, 12875954, 45065839, 90131678]

約数ペア:

[(1, 90131678), (2, 45065839), (7, 12875954), (13, 6933206), (14, 6437977), (26, 3466603), (49, 1839422), (91, 990458), (98, 919711), (182, 495229), (263, 342706), (269, 335062), (526, 171353), (538, 167531), (637, 141494), (1274, 70747), (1841, 48958), (1883, 47866), (3419, 26362), (3497, 25774), (3682, 24479), (3766, 23933), (6838, 13181), (6994, 12887)]