21244401

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{487}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 31821504

約数和(自身を除く): 10577103

約数列:

[1, 3, 9, 37, 111, 131, 333, 393, 487, 1179, 1461, 4383, 4847, 14541, 18019, 43623, 54057, 63797, 162171, 191391, 574173, 2360489, 7081467, 21244401]

約数ペア:

[(1, 21244401), (3, 7081467), (9, 2360489), (37, 574173), (111, 191391), (131, 162171), (333, 63797), (393, 54057), (487, 43623), (1179, 18019), (1461, 14541), (4383, 4847)]