21585440

素因数分解:

$2^5\times 5^1\times {\mathrm{134909}}^1$

素因数の和:134924

約数の個数: 24

約数和(自身を含む): 50995980

約数和(自身を除く): 29410540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134909, 269818, 539636, 674545, 1079272, 1349090, 2158544, 2698180, 4317088, 5396360, 10792720, 21585440]

約数ペア:

[(1, 21585440), (2, 10792720), (4, 5396360), (5, 4317088), (8, 2698180), (10, 2158544), (16, 1349090), (20, 1079272), (32, 674545), (40, 539636), (80, 269818), (160, 134909)]