640026

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:107

約数の個数: 36

約数和(自身を含む): 1471626

約数和(自身を除く): 831600

約数列:

[1, 2, 3, 6, 9, 18, 31, 37, 62, 74, 93, 111, 186, 222, 279, 333, 558, 666, 961, 1147, 1922, 2294, 2883, 3441, 5766, 6882, 8649, 10323, 17298, 20646, 35557, 71114, 106671, 213342, 320013, 640026]

約数ペア:

[(1, 640026), (2, 320013), (3, 213342), (6, 106671), (9, 71114), (18, 35557), (31, 20646), (37, 17298), (62, 10323), (74, 8649), (93, 6882), (111, 5766), (186, 3441), (222, 2883), (279, 2294), (333, 1922), (558, 1147), (666, 961)]