1821771

素因数分解:

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

素因数の和:52

約数の個数: 48

約数和(自身を含む): 3365280

約数和(自身を除く): 1543509

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 81, 119, 147, 153, 189, 243, 357, 441, 459, 567, 729, 833, 1071, 1323, 1377, 1701, 2187, 2499, 3213, 3969, 4131, 5103, 7497, 9639, 11907, 12393, 15309, 22491, 28917, 35721, 37179, 67473, 86751, 107163, 202419, 260253, 607257, 1821771]

約数ペア:

[(1, 1821771), (3, 607257), (7, 260253), (9, 202419), (17, 107163), (21, 86751), (27, 67473), (49, 37179), (51, 35721), (63, 28917), (81, 22491), (119, 15309), (147, 12393), (153, 11907), (189, 9639), (243, 7497), (357, 5103), (441, 4131), (459, 3969), (567, 3213), (729, 2499), (833, 2187), (1071, 1701), (1323, 1377)]