17988903

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:631

約数の個数: 24

約数和(自身を含む): 27112800

約数和(自身を除く): 9123897

約数列:

[1, 3, 9, 29, 87, 157, 261, 439, 471, 1317, 1413, 3951, 4553, 12731, 13659, 38193, 40977, 68923, 114579, 206769, 620307, 1998767, 5996301, 17988903]

約数ペア:

[(1, 17988903), (3, 5996301), (9, 1998767), (29, 620307), (87, 206769), (157, 114579), (261, 68923), (439, 40977), (471, 38193), (1317, 13659), (1413, 12731), (3951, 4553)]