21903680

素因数分解:

$2^6\times 5^1\times {\mathrm{68449}}^1$

素因数の和:68466

約数の個数: 28

約数和(自身を含む): 52158900

約数和(自身を除く): 30255220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68449, 136898, 273796, 342245, 547592, 684490, 1095184, 1368980, 2190368, 2737960, 4380736, 5475920, 10951840, 21903680]

約数ペア:

[(1, 21903680), (2, 10951840), (4, 5475920), (5, 4380736), (8, 2737960), (10, 2190368), (16, 1368980), (20, 1095184), (32, 684490), (40, 547592), (64, 342245), (80, 273796), (160, 136898), (320, 68449)]