12840940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13103}}^1$

素因数の和:13126

約数の個数: 36

約数和(自身を含む): 31370976

約数和(自身を除く): 18530036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 13103, 26206, 52412, 65515, 91721, 131030, 183442, 262060, 366884, 458605, 642047, 917210, 1284094, 1834420, 2568188, 3210235, 6420470, 12840940]

約数ペア:

[(1, 12840940), (2, 6420470), (4, 3210235), (5, 2568188), (7, 1834420), (10, 1284094), (14, 917210), (20, 642047), (28, 458605), (35, 366884), (49, 262060), (70, 183442), (98, 131030), (140, 91721), (196, 65515), (245, 52412), (490, 26206), (980, 13103)]