18993320

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1409}}^1$

素因数の和:1757

約数の個数: 32

約数和(自身を含む): 42892200

約数和(自身を除く): 23898880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1409, 1685, 2696, 2818, 3370, 5636, 6740, 7045, 11272, 13480, 14090, 28180, 56360, 474833, 949666, 1899332, 2374165, 3798664, 4748330, 9496660, 18993320]

約数ペア:

[(1, 18993320), (2, 9496660), (4, 4748330), (5, 3798664), (8, 2374165), (10, 1899332), (20, 949666), (40, 474833), (337, 56360), (674, 28180), (1348, 14090), (1409, 13480), (1685, 11272), (2696, 7045), (2818, 6740), (3370, 5636)]