21490119

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{14831}}^1$

素因数の和:14867

約数の個数: 24

約数和(自身を含む): 37020672

約数和(自身を除く): 15530553

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 14831, 44493, 103817, 133479, 311451, 341113, 934353, 1023339, 2387791, 3070017, 7163373, 21490119]

約数ペア:

[(1, 21490119), (3, 7163373), (7, 3070017), (9, 2387791), (21, 1023339), (23, 934353), (63, 341113), (69, 311451), (161, 133479), (207, 103817), (483, 44493), (1449, 14831)]