17987820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{733}}^1$

素因数の和:1154

約数の個数: 48

約数和(自身を含む): 50557920

約数和(自身を除く): 32570100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 409, 733, 818, 1227, 1466, 1636, 2045, 2199, 2454, 2932, 3665, 4090, 4398, 4908, 6135, 7330, 8180, 8796, 10995, 12270, 14660, 21990, 24540, 43980, 299797, 599594, 899391, 1199188, 1498985, 1798782, 2997970, 3597564, 4496955, 5995940, 8993910, 17987820]

約数ペア:

[(1, 17987820), (2, 8993910), (3, 5995940), (4, 4496955), (5, 3597564), (6, 2997970), (10, 1798782), (12, 1498985), (15, 1199188), (20, 899391), (30, 599594), (60, 299797), (409, 43980), (733, 24540), (818, 21990), (1227, 14660), (1466, 12270), (1636, 10995), (2045, 8796), (2199, 8180), (2454, 7330), (2932, 6135), (3665, 4908), (4090, 4398)]