1380820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1409}}^1$

素因数の和:1432

約数の個数: 36

約数和(自身を含む): 3375540

約数和(自身を除く): 1994720

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1409, 2818, 5636, 7045, 9863, 14090, 19726, 28180, 39452, 49315, 69041, 98630, 138082, 197260, 276164, 345205, 690410, 1380820]

約数ペア:

[(1, 1380820), (2, 690410), (4, 345205), (5, 276164), (7, 197260), (10, 138082), (14, 98630), (20, 69041), (28, 49315), (35, 39452), (49, 28180), (70, 19726), (98, 14090), (140, 9863), (196, 7045), (245, 5636), (490, 2818), (980, 1409)]