18719253

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4871}}^1$

素因数の和:4945

約数の個数: 24

約数和(自身を含む): 31414656

約数和(自身を除く): 12695403

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 4871, 14613, 34097, 43839, 102291, 297131, 306873, 891393, 2079917, 2674179, 6239751, 18719253]

約数ペア:

[(1, 18719253), (3, 6239751), (7, 2674179), (9, 2079917), (21, 891393), (61, 306873), (63, 297131), (183, 102291), (427, 43839), (549, 34097), (1281, 14613), (3843, 4871)]