645771

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:231

約数の個数: 24

約数和(自身を含む): 1050624

約数和(自身を除く): 404853

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 191, 483, 573, 1127, 1337, 3381, 4011, 4393, 9359, 13179, 28077, 30751, 92253, 215257, 645771]

約数ペア:

[(1, 645771), (3, 215257), (7, 92253), (21, 30751), (23, 28077), (49, 13179), (69, 9359), (147, 4393), (161, 4011), (191, 3381), (483, 1337), (573, 1127)]