21206259

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{983}}^1$

素因数の和:1056

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 12800781

約数列:

[1, 3, 9, 17, 27, 47, 51, 141, 153, 423, 459, 799, 983, 1269, 2397, 2949, 7191, 8847, 16711, 21573, 26541, 46201, 50133, 138603, 150399, 415809, 451197, 785417, 1247427, 2356251, 7068753, 21206259]

約数ペア:

[(1, 21206259), (3, 7068753), (9, 2356251), (17, 1247427), (27, 785417), (47, 451197), (51, 415809), (141, 150399), (153, 138603), (423, 50133), (459, 46201), (799, 26541), (983, 21573), (1269, 16711), (2397, 8847), (2949, 7191)]