21540735

素因数分解:

$3^5\times 5^1\times {\mathrm{17729}}^1$

素因数の和:17749

約数の個数: 24

約数和(自身を含む): 38722320

約数和(自身を除く): 17181585

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17729, 53187, 88645, 159561, 265935, 478683, 797805, 1436049, 2393415, 4308147, 7180245, 21540735]

約数ペア:

[(1, 21540735), (3, 7180245), (5, 4308147), (9, 2393415), (15, 1436049), (27, 797805), (45, 478683), (81, 265935), (135, 159561), (243, 88645), (405, 53187), (1215, 17729)]