21540800

素因数分解:

$2^6\times 5^2\times {\mathrm{13463}}^1$

素因数の和:13485

約数の個数: 42

約数和(自身を含む): 53007768

約数和(自身を除く): 31466968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13463, 26926, 53852, 67315, 107704, 134630, 215408, 269260, 336575, 430816, 538520, 673150, 861632, 1077040, 1346300, 2154080, 2692600, 4308160, 5385200, 10770400, 21540800]

約数ペア:

[(1, 21540800), (2, 10770400), (4, 5385200), (5, 4308160), (8, 2692600), (10, 2154080), (16, 1346300), (20, 1077040), (25, 861632), (32, 673150), (40, 538520), (50, 430816), (64, 336575), (80, 269260), (100, 215408), (160, 134630), (200, 107704), (320, 67315), (400, 53852), (800, 26926), (1600, 13463)]