21167690120

素因数分解:

$2^3\times 5^1\times {\mathrm{2207}}^1\times {\mathrm{239779}}^1$

素因数の和:241997

約数の個数: 32

約数和(自身を含む): 47649081600

約数和(自身を除く): 26481391480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2207, 4414, 8828, 11035, 17656, 22070, 44140, 88280, 239779, 479558, 959116, 1198895, 1918232, 2397790, 4795580, 9591160, 529192253, 1058384506, 2116769012, 2645961265, 4233538024, 5291922530, 10583845060, 21167690120]

約数ペア:

[(1, 21167690120), (2, 10583845060), (4, 5291922530), (5, 4233538024), (8, 2645961265), (10, 2116769012), (20, 1058384506), (40, 529192253), (2207, 9591160), (4414, 4795580), (8828, 2397790), (11035, 1918232), (17656, 1198895), (22070, 959116), (44140, 479558), (88280, 239779)]