28515753

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^2\times {\mathrm{157}}^1$

素因数の和:235

約数の個数: 48

約数和(自身を含む): 50206080

約数和(自身を除く): 21690327

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 157, 189, 217, 279, 471, 651, 837, 961, 1099, 1413, 1953, 2883, 3297, 4239, 4867, 5859, 6727, 8649, 9891, 14601, 20181, 25947, 29673, 34069, 43803, 60543, 102207, 131409, 150877, 181629, 306621, 452631, 919863, 1056139, 1357893, 3168417, 4073679, 9505251, 28515753]

約数ペア:

[(1, 28515753), (3, 9505251), (7, 4073679), (9, 3168417), (21, 1357893), (27, 1056139), (31, 919863), (63, 452631), (93, 306621), (157, 181629), (189, 150877), (217, 131409), (279, 102207), (471, 60543), (651, 43803), (837, 34069), (961, 29673), (1099, 25947), (1413, 20181), (1953, 14601), (2883, 9891), (3297, 8649), (4239, 6727), (4867, 5859)]