21997760

素因数分解:

$2^6\times 5^1\times {\mathrm{68743}}^1$

素因数の和:68760

約数の個数: 28

約数和(自身を含む): 52382928

約数和(自身を除く): 30385168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68743, 137486, 274972, 343715, 549944, 687430, 1099888, 1374860, 2199776, 2749720, 4399552, 5499440, 10998880, 21997760]

約数ペア:

[(1, 21997760), (2, 10998880), (4, 5499440), (5, 4399552), (8, 2749720), (10, 2199776), (16, 1374860), (20, 1099888), (32, 687430), (40, 549944), (64, 343715), (80, 274972), (160, 137486), (320, 68743)]