291240580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 623137536

約数和(自身を除く): 331896956

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 317, 355, 634, 647, 710, 1268, 1294, 1420, 1585, 2588, 3170, 3235, 6340, 6470, 12940, 22507, 45014, 45937, 90028, 91874, 112535, 183748, 205099, 225070, 229685, 410198, 450140, 459370, 820396, 918740, 1025495, 2050990, 4101980, 14562029, 29124058, 58248116, 72810145, 145620290, 291240580]

約数ペア:

[(1, 291240580), (2, 145620290), (4, 72810145), (5, 58248116), (10, 29124058), (20, 14562029), (71, 4101980), (142, 2050990), (284, 1025495), (317, 918740), (355, 820396), (634, 459370), (647, 450140), (710, 410198), (1268, 229685), (1294, 225070), (1420, 205099), (1585, 183748), (2588, 112535), (3170, 91874), (3235, 90028), (6340, 45937), (6470, 45014), (12940, 22507)]