826616660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{5167}}^1$

素因数の和:5616

約数の個数: 48

約数和(自身を含む): 1831952640

約数和(自身を除く): 1005335980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 421, 842, 1684, 2105, 4210, 5167, 7999, 8420, 10334, 15998, 20668, 25835, 31996, 39995, 51670, 79990, 98173, 103340, 159980, 196346, 392692, 490865, 981730, 1963460, 2175307, 4350614, 8701228, 10876535, 21753070, 41330833, 43506140, 82661666, 165323332, 206654165, 413308330, 826616660]

約数ペア:

[(1, 826616660), (2, 413308330), (4, 206654165), (5, 165323332), (10, 82661666), (19, 43506140), (20, 41330833), (38, 21753070), (76, 10876535), (95, 8701228), (190, 4350614), (380, 2175307), (421, 1963460), (842, 981730), (1684, 490865), (2105, 392692), (4210, 196346), (5167, 159980), (7999, 103340), (8420, 98173), (10334, 79990), (15998, 51670), (20668, 39995), (25835, 31996)]