20869821

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11423}}^1$

素因数の和:11465

約数の個数: 24

約数和(自身を含む): 35642880

約数和(自身を除く): 14773059

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11423, 34269, 79961, 102807, 239883, 331267, 719649, 993801, 2318869, 2981403, 6956607, 20869821]

約数ペア:

[(1, 20869821), (3, 6956607), (7, 2981403), (9, 2318869), (21, 993801), (29, 719649), (63, 331267), (87, 239883), (203, 102807), (261, 79961), (609, 34269), (1827, 11423)]