21949893

素因数分解:

$3^3\times 7^2\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 38741760

約数和(自身を除く): 16791867

約数列:

[1, 3, 7, 9, 21, 27, 47, 49, 63, 141, 147, 189, 329, 353, 423, 441, 987, 1059, 1269, 1323, 2303, 2471, 2961, 3177, 6909, 7413, 8883, 9531, 16591, 17297, 20727, 22239, 49773, 51891, 62181, 66717, 116137, 149319, 155673, 348411, 447957, 467019, 812959, 1045233, 2438877, 3135699, 7316631, 21949893]

約数ペア:

[(1, 21949893), (3, 7316631), (7, 3135699), (9, 2438877), (21, 1045233), (27, 812959), (47, 467019), (49, 447957), (63, 348411), (141, 155673), (147, 149319), (189, 116137), (329, 66717), (353, 62181), (423, 51891), (441, 49773), (987, 22239), (1059, 20727), (1269, 17297), (1323, 16591), (2303, 9531), (2471, 8883), (2961, 7413), (3177, 6909)]