21109352908

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{784501}}^1$

素因数の和:784574

約数の個数: 36

約数和(自身を含む): 43624587216

約数和(自身を除く): 22515234308

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 961, 1922, 3844, 6727, 13454, 26908, 784501, 1569002, 3138004, 5491507, 10983014, 21966028, 24319531, 48639062, 97278124, 170236717, 340473434, 680946868, 753905461, 1507810922, 3015621844, 5277338227, 10554676454, 21109352908]

約数ペア:

[(1, 21109352908), (2, 10554676454), (4, 5277338227), (7, 3015621844), (14, 1507810922), (28, 753905461), (31, 680946868), (62, 340473434), (124, 170236717), (217, 97278124), (434, 48639062), (868, 24319531), (961, 21966028), (1922, 10983014), (3844, 5491507), (6727, 3138004), (13454, 1569002), (26908, 784501)]