20554880

素因数分解:

$2^7\times 5^1\times {\mathrm{32117}}^1$

素因数の和:32136

約数の個数: 32

約数和(自身を含む): 49140540

約数和(自身を除く): 28585660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32117, 64234, 128468, 160585, 256936, 321170, 513872, 642340, 1027744, 1284680, 2055488, 2569360, 4110976, 5138720, 10277440, 20554880]

約数ペア:

[(1, 20554880), (2, 10277440), (4, 5138720), (5, 4110976), (8, 2569360), (10, 2055488), (16, 1284680), (20, 1027744), (32, 642340), (40, 513872), (64, 321170), (80, 256936), (128, 160585), (160, 128468), (320, 64234), (640, 32117)]