212859440

素因数分解:

$2^4\times 5^1\times {\mathrm{2660743}}^1$

素因数の和:2660756

約数の個数: 20

約数和(自身を含む): 494898384

約数和(自身を除く): 282038944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2660743, 5321486, 10642972, 13303715, 21285944, 26607430, 42571888, 53214860, 106429720, 212859440]

約数ペア:

[(1, 212859440), (2, 106429720), (4, 53214860), (5, 42571888), (8, 26607430), (10, 21285944), (16, 13303715), (20, 10642972), (40, 5321486), (80, 2660743)]