20906764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{1151}}^1$

素因数の和:1413

約数の個数: 24

約数和(自身を含む): 38707200

約数和(自身を除く): 17800436

約数列:

[1, 2, 4, 19, 38, 76, 239, 478, 956, 1151, 2302, 4541, 4604, 9082, 18164, 21869, 43738, 87476, 275089, 550178, 1100356, 5226691, 10453382, 20906764]

約数ペア:

[(1, 20906764), (2, 10453382), (4, 5226691), (19, 1100356), (38, 550178), (76, 275089), (239, 87476), (478, 43738), (956, 21869), (1151, 18164), (2302, 9082), (4541, 4604)]