21192353

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 29877120

約数和(自身を除く): 8684767

約数列:

[1, 7, 13, 17, 19, 49, 91, 103, 119, 133, 221, 247, 323, 637, 721, 833, 931, 1339, 1547, 1729, 1751, 1957, 2261, 4199, 5047, 9373, 10829, 12103, 12257, 13699, 15827, 22763, 25441, 29393, 33269, 65611, 85799, 95893, 159341, 178087, 205751, 232883, 432497, 1115387, 1246609, 1630181, 3027479, 21192353]

約数ペア:

[(1, 21192353), (7, 3027479), (13, 1630181), (17, 1246609), (19, 1115387), (49, 432497), (91, 232883), (103, 205751), (119, 178087), (133, 159341), (221, 95893), (247, 85799), (323, 65611), (637, 33269), (721, 29393), (833, 25441), (931, 22763), (1339, 15827), (1547, 13699), (1729, 12257), (1751, 12103), (1957, 10829), (2261, 9373), (4199, 5047)]