221172693

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{7901}}^1$

素因数の和:7985

約数の個数: 32

約数和(自身を含む): 356032512

約数和(自身を除く): 134859819

約数列:

[1, 3, 7, 21, 31, 43, 93, 129, 217, 301, 651, 903, 1333, 3999, 7901, 9331, 23703, 27993, 55307, 165921, 244931, 339743, 734793, 1019229, 1714517, 2378201, 5143551, 7134603, 10532033, 31596099, 73724231, 221172693]

約数ペア:

[(1, 221172693), (3, 73724231), (7, 31596099), (21, 10532033), (31, 7134603), (43, 5143551), (93, 2378201), (129, 1714517), (217, 1019229), (301, 734793), (651, 339743), (903, 244931), (1333, 165921), (3999, 55307), (7901, 27993), (9331, 23703)]