639305446

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1\times {\mathrm{761}}^1$

素因数の和:1264

約数の個数: 32

約数和(自身を含む): 1049731200

約数和(自身を除く): 410425754

約数列:

[1, 2, 13, 26, 79, 158, 409, 761, 818, 1027, 1522, 2054, 5317, 9893, 10634, 19786, 32311, 60119, 64622, 120238, 311249, 420043, 622498, 781547, 840086, 1563094, 4046237, 8092474, 24588671, 49177342, 319652723, 639305446]

約数ペア:

[(1, 639305446), (2, 319652723), (13, 49177342), (26, 24588671), (79, 8092474), (158, 4046237), (409, 1563094), (761, 840086), (818, 781547), (1027, 622498), (1522, 420043), (2054, 311249), (5317, 120238), (9893, 64622), (10634, 60119), (19786, 32311)]