21320793

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 37632000

約数和(自身を除く): 16311207

約数列:

[1, 3, 9, 13, 19, 23, 27, 39, 57, 69, 117, 139, 171, 207, 247, 299, 351, 417, 437, 513, 621, 741, 897, 1251, 1311, 1807, 2223, 2641, 2691, 3197, 3753, 3933, 5421, 5681, 6669, 7923, 8073, 9591, 11799, 16263, 17043, 23769, 28773, 34333, 41561, 48789, 51129, 60743, 71307, 86319, 102999, 124683, 153387, 182229, 308997, 374049, 546687, 789659, 926991, 1122147, 1640061, 2368977, 7106931, 21320793]

約数ペア:

[(1, 21320793), (3, 7106931), (9, 2368977), (13, 1640061), (19, 1122147), (23, 926991), (27, 789659), (39, 546687), (57, 374049), (69, 308997), (117, 182229), (139, 153387), (171, 124683), (207, 102999), (247, 86319), (299, 71307), (351, 60743), (417, 51129), (437, 48789), (513, 41561), (621, 34333), (741, 28773), (897, 23769), (1251, 17043), (1311, 16263), (1807, 11799), (2223, 9591), (2641, 8073), (2691, 7923), (3197, 6669), (3753, 5681), (3933, 5421)]