221890851

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{15937}}^1$

素因数の和:15980

約数の個数: 48

約数和(自身を含む): 417703104

約数和(自身を除く): 195812253

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 357, 663, 819, 1071, 1547, 1989, 4641, 13923, 15937, 47811, 111559, 143433, 207181, 270929, 334677, 621543, 812787, 1004031, 1450267, 1864629, 1896503, 2438361, 3522077, 4350801, 5689509, 10566231, 13052403, 17068527, 24654539, 31698693, 73963617, 221890851]

約数ペア:

[(1, 221890851), (3, 73963617), (7, 31698693), (9, 24654539), (13, 17068527), (17, 13052403), (21, 10566231), (39, 5689509), (51, 4350801), (63, 3522077), (91, 2438361), (117, 1896503), (119, 1864629), (153, 1450267), (221, 1004031), (273, 812787), (357, 621543), (663, 334677), (819, 270929), (1071, 207181), (1547, 143433), (1989, 111559), (4641, 47811), (13923, 15937)]