289232680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{657347}}^1$

素因数の和:657369

約数の個数: 32

約数和(自身を含む): 709935840

約数和(自身を除く): 420703160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 657347, 1314694, 2629388, 3286735, 5258776, 6573470, 7230817, 13146940, 14461634, 26293880, 28923268, 36154085, 57846536, 72308170, 144616340, 289232680]

約数ペア:

[(1, 289232680), (2, 144616340), (4, 72308170), (5, 57846536), (8, 36154085), (10, 28923268), (11, 26293880), (20, 14461634), (22, 13146940), (40, 7230817), (44, 6573470), (55, 5258776), (88, 3286735), (110, 2629388), (220, 1314694), (440, 657347)]