20986900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19079}}^1$

素因数の和:19104

約数の個数: 36

約数和(自身を含む): 49684320

約数和(自身を除く): 28697420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 19079, 38158, 76316, 95395, 190790, 209869, 381580, 419738, 476975, 839476, 953950, 1049345, 1907900, 2098690, 4197380, 5246725, 10493450, 20986900]

約数ペア:

[(1, 20986900), (2, 10493450), (4, 5246725), (5, 4197380), (10, 2098690), (11, 1907900), (20, 1049345), (22, 953950), (25, 839476), (44, 476975), (50, 419738), (55, 381580), (100, 209869), (110, 190790), (220, 95395), (275, 76316), (550, 38158), (1100, 19079)]