1280880861

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{251}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 2011806720

約数和(自身を除く): 730925859

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 179, 221, 251, 537, 559, 663, 731, 753, 1677, 2193, 2327, 3043, 3263, 4267, 6981, 7697, 9129, 9503, 9789, 10793, 12801, 23091, 28509, 32379, 39559, 44929, 55471, 100061, 118677, 130849, 134787, 140309, 166413, 183481, 300183, 392547, 420927, 550443, 584077, 763793, 1701037, 1752231, 1931947, 2291379, 2385253, 5103111, 5795841, 7155759, 9929309, 25115311, 29787927, 32843099, 75345933, 98529297, 426960287, 1280880861]

約数ペア:

[(1, 1280880861), (3, 426960287), (13, 98529297), (17, 75345933), (39, 32843099), (43, 29787927), (51, 25115311), (129, 9929309), (179, 7155759), (221, 5795841), (251, 5103111), (537, 2385253), (559, 2291379), (663, 1931947), (731, 1752231), (753, 1701037), (1677, 763793), (2193, 584077), (2327, 550443), (3043, 420927), (3263, 392547), (4267, 300183), (6981, 183481), (7697, 166413), (9129, 140309), (9503, 134787), (9789, 130849), (10793, 118677), (12801, 100061), (23091, 55471), (28509, 44929), (32379, 39559)]