216804920

素因数分解:

$2^3\times 5^1\times {\mathrm{5420123}}^1$

素因数の和:5420134

約数の個数: 16

約数和(自身を含む): 487811160

約数和(自身を除く): 271006240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5420123, 10840246, 21680492, 27100615, 43360984, 54201230, 108402460, 216804920]

約数ペア:

[(1, 216804920), (2, 108402460), (4, 54201230), (5, 43360984), (8, 27100615), (10, 21680492), (20, 10840246), (40, 5420123)]