808990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 1838592

約数和(自身を除く): 1029602

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 127, 130, 182, 245, 254, 455, 490, 635, 637, 889, 910, 1270, 1274, 1651, 1778, 3185, 3302, 4445, 6223, 6370, 8255, 8890, 11557, 12446, 16510, 23114, 31115, 57785, 62230, 80899, 115570, 161798, 404495, 808990]

約数ペア:

[(1, 808990), (2, 404495), (5, 161798), (7, 115570), (10, 80899), (13, 62230), (14, 57785), (26, 31115), (35, 23114), (49, 16510), (65, 12446), (70, 11557), (91, 8890), (98, 8255), (127, 6370), (130, 6223), (182, 4445), (245, 3302), (254, 3185), (455, 1778), (490, 1651), (635, 1274), (637, 1270), (889, 910)]