21699680

素因数分解:

$2^5\times 5^1\times {\mathrm{135623}}^1$

素因数の和:135638

約数の個数: 24

約数和(自身を含む): 51265872

約数和(自身を除く): 29566192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135623, 271246, 542492, 678115, 1084984, 1356230, 2169968, 2712460, 4339936, 5424920, 10849840, 21699680]

約数ペア:

[(1, 21699680), (2, 10849840), (4, 5424920), (5, 4339936), (8, 2712460), (10, 2169968), (16, 1356230), (20, 1084984), (32, 678115), (40, 542492), (80, 271246), (160, 135623)]