21807040

素因数分解:

$2^6\times 5^1\times {\mathrm{68147}}^1$

素因数の和:68164

約数の個数: 28

約数和(自身を含む): 51928776

約数和(自身を除く): 30121736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68147, 136294, 272588, 340735, 545176, 681470, 1090352, 1362940, 2180704, 2725880, 4361408, 5451760, 10903520, 21807040]

約数ペア:

[(1, 21807040), (2, 10903520), (4, 5451760), (5, 4361408), (8, 2725880), (10, 2180704), (16, 1362940), (20, 1090352), (32, 681470), (40, 545176), (64, 340735), (80, 272588), (160, 136294), (320, 68147)]