21000474621

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1091}}^1\times {\mathrm{3433}}^1$

素因数の和:4626

約数の個数: 48

約数和(自身を含む): 35099326080

約数和(自身を除く): 14098851459

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1091, 1869, 3273, 3433, 5607, 7637, 9819, 10299, 22911, 24031, 30897, 68733, 72093, 97099, 216279, 291297, 305537, 679693, 873891, 916611, 2039079, 2138759, 2749833, 3745403, 6117237, 6416277, 11236209, 19248831, 26217821, 33708627, 78653463, 235960389, 333340867, 1000022601, 2333386069, 3000067803, 7000158207, 21000474621]

約数ペア:

[(1, 21000474621), (3, 7000158207), (7, 3000067803), (9, 2333386069), (21, 1000022601), (63, 333340867), (89, 235960389), (267, 78653463), (623, 33708627), (801, 26217821), (1091, 19248831), (1869, 11236209), (3273, 6416277), (3433, 6117237), (5607, 3745403), (7637, 2749833), (9819, 2138759), (10299, 2039079), (22911, 916611), (24031, 873891), (30897, 679693), (68733, 305537), (72093, 291297), (97099, 216279)]