81219915

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{28649}}^1$

素因数の和:28673

約数の個数: 40

約数和(自身を含む): 166399200

約数和(自身を除く): 85179285

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 28649, 85947, 143245, 200543, 257841, 429735, 601629, 773523, 1002715, 1289205, 1804887, 2320569, 3008145, 3867615, 5414661, 9024435, 11602845, 16243983, 27073305, 81219915]

約数ペア:

[(1, 81219915), (3, 27073305), (5, 16243983), (7, 11602845), (9, 9024435), (15, 5414661), (21, 3867615), (27, 3008145), (35, 2320569), (45, 1804887), (63, 1289205), (81, 1002715), (105, 773523), (135, 601629), (189, 429735), (315, 257841), (405, 200543), (567, 143245), (945, 85947), (2835, 28649)]