1780821

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1229}}^1$

素因数の和:1265

約数の個数: 24

約数和(自身を含む): 3070080

約数和(自身を除く): 1289259

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1229, 1449, 3687, 8603, 11061, 25809, 28267, 77427, 84801, 197869, 254403, 593607, 1780821]

約数ペア:

[(1, 1780821), (3, 593607), (7, 254403), (9, 197869), (21, 84801), (23, 77427), (63, 28267), (69, 25809), (161, 11061), (207, 8603), (483, 3687), (1229, 1449)]