21022659

素因数分解:

$3^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{727}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 38158848

約数和(自身を除く): 17136189

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 243, 357, 459, 567, 727, 1071, 1377, 1701, 2181, 3213, 4131, 5089, 6543, 9639, 12359, 15267, 19629, 28917, 37077, 45801, 58887, 86513, 111231, 137403, 176661, 259539, 333693, 412209, 778617, 1001079, 1236627, 2335851, 3003237, 7007553, 21022659]

約数ペア:

[(1, 21022659), (3, 7007553), (7, 3003237), (9, 2335851), (17, 1236627), (21, 1001079), (27, 778617), (51, 412209), (63, 333693), (81, 259539), (119, 176661), (153, 137403), (189, 111231), (243, 86513), (357, 58887), (459, 45801), (567, 37077), (727, 28917), (1071, 19629), (1377, 15267), (1701, 12359), (2181, 9639), (3213, 6543), (4131, 5089)]