20821864

素因数分解:

$2^3\times 7^2\times {\mathrm{53117}}^1$

素因数の和:53137

約数の個数: 24

約数和(自身を含む): 45415890

約数和(自身を除く): 24594026

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 53117, 106234, 212468, 371819, 424936, 743638, 1487276, 2602733, 2974552, 5205466, 10410932, 20821864]

約数ペア:

[(1, 20821864), (2, 10410932), (4, 5205466), (7, 2974552), (8, 2602733), (14, 1487276), (28, 743638), (49, 424936), (56, 371819), (98, 212468), (196, 106234), (392, 53117)]