218634640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{390419}}^1$

素因数の和:390439

約数の個数: 40

約数和(自身を含む): 580944960

約数和(自身を除く): 362310320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 390419, 780838, 1561676, 1952095, 2732933, 3123352, 3904190, 5465866, 6246704, 7808380, 10931732, 13664665, 15616760, 21863464, 27329330, 31233520, 43726928, 54658660, 109317320, 218634640]

約数ペア:

[(1, 218634640), (2, 109317320), (4, 54658660), (5, 43726928), (7, 31233520), (8, 27329330), (10, 21863464), (14, 15616760), (16, 13664665), (20, 10931732), (28, 7808380), (35, 6246704), (40, 5465866), (56, 3904190), (70, 3123352), (80, 2732933), (112, 1952095), (140, 1561676), (280, 780838), (560, 390419)]