21370024

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3877}}^1$

素因数の和:3949

約数の個数: 32

約数和(自身を含む): 43976520

約数和(自身を除く): 22606496

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3877, 5512, 7754, 15508, 31016, 50401, 100802, 201604, 205481, 403208, 410962, 821924, 1643848, 2671253, 5342506, 10685012, 21370024]

約数ペア:

[(1, 21370024), (2, 10685012), (4, 5342506), (8, 2671253), (13, 1643848), (26, 821924), (52, 410962), (53, 403208), (104, 205481), (106, 201604), (212, 100802), (424, 50401), (689, 31016), (1378, 15508), (2756, 7754), (3877, 5512)]