21000512720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23864219}}^1$

素因数の和:23864243

約数の個数: 40

約数和(自身を含む): 53264939040

約数和(自身を除く): 32264426320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23864219, 47728438, 95456876, 119321095, 190913752, 238642190, 262506409, 381827504, 477284380, 525012818, 954568760, 1050025636, 1312532045, 1909137520, 2100051272, 2625064090, 4200102544, 5250128180, 10500256360, 21000512720]

約数ペア:

[(1, 21000512720), (2, 10500256360), (4, 5250128180), (5, 4200102544), (8, 2625064090), (10, 2100051272), (11, 1909137520), (16, 1312532045), (20, 1050025636), (22, 954568760), (40, 525012818), (44, 477284380), (55, 381827504), (80, 262506409), (88, 238642190), (110, 190913752), (176, 119321095), (220, 95456876), (440, 47728438), (880, 23864219)]