1990821

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{467}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 3201120

約数和(自身を除く): 1210299

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 467, 609, 1401, 1421, 3269, 4263, 9807, 13543, 22883, 40629, 68649, 94801, 284403, 663607, 1990821]

約数ペア:

[(1, 1990821), (3, 663607), (7, 284403), (21, 94801), (29, 68649), (49, 40629), (87, 22883), (147, 13543), (203, 9807), (467, 4263), (609, 3269), (1401, 1421)]