21081972

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{6079}}^1$

素因数の和:6120

約数の個数: 36

約数和(自身を含む): 52263680

約数和(自身を除く): 31181708

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 289, 578, 867, 1156, 1734, 3468, 6079, 12158, 18237, 24316, 36474, 72948, 103343, 206686, 310029, 413372, 620058, 1240116, 1756831, 3513662, 5270493, 7027324, 10540986, 21081972]

約数ペア:

[(1, 21081972), (2, 10540986), (3, 7027324), (4, 5270493), (6, 3513662), (12, 1756831), (17, 1240116), (34, 620058), (51, 413372), (68, 310029), (102, 206686), (204, 103343), (289, 72948), (578, 36474), (867, 24316), (1156, 18237), (1734, 12158), (3468, 6079)]