21138045392

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{478843}}^1$

素因数の和:478971

約数の個数: 40

約数和(自身を含む): 42751192320

約数和(自身を除く): 21613146928

約数列:

[1, 2, 4, 8, 16, 31, 62, 89, 124, 178, 248, 356, 496, 712, 1424, 2759, 5518, 11036, 22072, 44144, 478843, 957686, 1915372, 3830744, 7661488, 14844133, 29688266, 42617027, 59376532, 85234054, 118753064, 170468108, 237506128, 340936216, 681872432, 1321127837, 2642255674, 5284511348, 10569022696, 21138045392]

約数ペア:

[(1, 21138045392), (2, 10569022696), (4, 5284511348), (8, 2642255674), (16, 1321127837), (31, 681872432), (62, 340936216), (89, 237506128), (124, 170468108), (178, 118753064), (248, 85234054), (356, 59376532), (496, 42617027), (712, 29688266), (1424, 14844133), (2759, 7661488), (5518, 3830744), (11036, 1915372), (22072, 957686), (44144, 478843)]