21090560

素因数分解:

$2^8\times 5^1\times {\mathrm{16477}}^1$

素因数の和:16498

約数の個数: 36

約数和(自身を含む): 50521548

約数和(自身を除く): 29430988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16477, 32954, 65908, 82385, 131816, 164770, 263632, 329540, 527264, 659080, 1054528, 1318160, 2109056, 2636320, 4218112, 5272640, 10545280, 21090560]

約数ペア:

[(1, 21090560), (2, 10545280), (4, 5272640), (5, 4218112), (8, 2636320), (10, 2109056), (16, 1318160), (20, 1054528), (32, 659080), (40, 527264), (64, 329540), (80, 263632), (128, 164770), (160, 131816), (256, 82385), (320, 65908), (640, 32954), (1280, 16477)]