20909763

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5441}}^1$

素因数の和:5515

約数の個数: 24

約数和(自身を含む): 35090016

約数和(自身を除く): 14180253

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5441, 16323, 38087, 48969, 114261, 331901, 342783, 995703, 2323307, 2987109, 6969921, 20909763]

約数ペア:

[(1, 20909763), (3, 6969921), (7, 2987109), (9, 2323307), (21, 995703), (61, 342783), (63, 331901), (183, 114261), (427, 48969), (549, 38087), (1281, 16323), (3843, 5441)]