20807318

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 39502080

約数和(自身を除く): 18694762

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 133, 161, 179, 266, 322, 358, 361, 437, 722, 874, 1253, 2506, 2527, 3059, 3401, 4117, 5054, 6118, 6802, 8234, 8303, 16606, 23807, 28819, 47614, 57638, 58121, 64619, 78223, 116242, 129238, 156446, 452333, 547561, 904666, 1095122, 1486237, 2972474, 10403659, 20807318]

約数ペア:

[(1, 20807318), (2, 10403659), (7, 2972474), (14, 1486237), (19, 1095122), (23, 904666), (38, 547561), (46, 452333), (133, 156446), (161, 129238), (179, 116242), (266, 78223), (322, 64619), (358, 58121), (361, 57638), (437, 47614), (722, 28819), (874, 23807), (1253, 16606), (2506, 8303), (2527, 8234), (3059, 6802), (3401, 6118), (4117, 5054)]