2102804920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1222561}}^1$

素因数の和:1222615

約数の個数: 32

約数和(自身を含む): 4841345520

約数和(自身を除く): 2738540600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1222561, 2445122, 4890244, 6112805, 9780488, 12225610, 24451220, 48902440, 52570123, 105140246, 210280492, 262850615, 420560984, 525701230, 1051402460, 2102804920]

約数ペア:

[(1, 2102804920), (2, 1051402460), (4, 525701230), (5, 420560984), (8, 262850615), (10, 210280492), (20, 105140246), (40, 52570123), (43, 48902440), (86, 24451220), (172, 12225610), (215, 9780488), (344, 6112805), (430, 4890244), (860, 2445122), (1720, 1222561)]