8421980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1399}}^1$

素因数の和:1458

約数の個数: 48

約数和(自身を含む): 20697600

約数和(自身を除く): 12275620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1399, 1505, 2798, 3010, 5596, 6020, 6995, 9793, 13990, 19586, 27980, 39172, 48965, 60157, 97930, 120314, 195860, 240628, 300785, 421099, 601570, 842198, 1203140, 1684396, 2105495, 4210990, 8421980]

約数ペア:

[(1, 8421980), (2, 4210990), (4, 2105495), (5, 1684396), (7, 1203140), (10, 842198), (14, 601570), (20, 421099), (28, 300785), (35, 240628), (43, 195860), (70, 120314), (86, 97930), (140, 60157), (172, 48965), (215, 39172), (301, 27980), (430, 19586), (602, 13990), (860, 9793), (1204, 6995), (1399, 6020), (1505, 5596), (2798, 3010)]