1280497790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{68881}}^1$

素因数の和:68925

約数の個数: 48

約数和(自身を含む): 2722767696

約数和(自身を除く): 1442269906

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 169, 286, 338, 715, 845, 1430, 1690, 1859, 3718, 9295, 18590, 68881, 137762, 344405, 688810, 757691, 895453, 1515382, 1790906, 3788455, 4477265, 7576910, 8954530, 9849983, 11640889, 19699966, 23281778, 49249915, 58204445, 98499830, 116408890, 128049779, 256099558, 640248895, 1280497790]

約数ペア:

[(1, 1280497790), (2, 640248895), (5, 256099558), (10, 128049779), (11, 116408890), (13, 98499830), (22, 58204445), (26, 49249915), (55, 23281778), (65, 19699966), (110, 11640889), (130, 9849983), (143, 8954530), (169, 7576910), (286, 4477265), (338, 3788455), (715, 1790906), (845, 1515382), (1430, 895453), (1690, 757691), (1859, 688810), (3718, 344405), (9295, 137762), (18590, 68881)]