20514988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1066

約数の個数: 48

約数和(自身を含む): 42759360

約数和(自身を除く): 22244372

約数列:

[1, 2, 4, 13, 17, 23, 26, 34, 46, 52, 68, 92, 221, 299, 391, 442, 598, 782, 884, 1009, 1196, 1564, 2018, 4036, 5083, 10166, 13117, 17153, 20332, 23207, 26234, 34306, 46414, 52468, 68612, 92828, 222989, 301691, 394519, 445978, 603382, 789038, 891956, 1206764, 1578076, 5128747, 10257494, 20514988]

約数ペア:

[(1, 20514988), (2, 10257494), (4, 5128747), (13, 1578076), (17, 1206764), (23, 891956), (26, 789038), (34, 603382), (46, 445978), (52, 394519), (68, 301691), (92, 222989), (221, 92828), (299, 68612), (391, 52468), (442, 46414), (598, 34306), (782, 26234), (884, 23207), (1009, 20332), (1196, 17153), (1564, 13117), (2018, 10166), (4036, 5083)]