21226088

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2459}}^1$

素因数の和:2561

約数の個数: 32

約数和(自身を含む): 43394400

約数和(自身を除く): 22168312

約数列:

[1, 2, 4, 8, 13, 26, 52, 83, 104, 166, 332, 664, 1079, 2158, 2459, 4316, 4918, 8632, 9836, 19672, 31967, 63934, 127868, 204097, 255736, 408194, 816388, 1632776, 2653261, 5306522, 10613044, 21226088]

約数ペア:

[(1, 21226088), (2, 10613044), (4, 5306522), (8, 2653261), (13, 1632776), (26, 816388), (52, 408194), (83, 255736), (104, 204097), (166, 127868), (332, 63934), (664, 31967), (1079, 19672), (2158, 9836), (2459, 8632), (4316, 4918)]