640566

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{1873}}^1$

素因数の和:1900

約数の個数: 24

約数和(自身を含む): 1461720

約数和(自身を除く): 821154

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 1873, 3746, 5619, 11238, 16857, 33714, 35587, 71174, 106761, 213522, 320283, 640566]

約数ペア:

[(1, 640566), (2, 320283), (3, 213522), (6, 106761), (9, 71174), (18, 35587), (19, 33714), (38, 16857), (57, 11238), (114, 5619), (171, 3746), (342, 1873)]