219277940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{223753}}^1$

素因数の和:223776

約数の個数: 36

約数和(自身を含む): 535667076

約数和(自身を除く): 316389136

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 223753, 447506, 895012, 1118765, 1566271, 2237530, 3132542, 4475060, 6265084, 7831355, 10963897, 15662710, 21927794, 31325420, 43855588, 54819485, 109638970, 219277940]

約数ペア:

[(1, 219277940), (2, 109638970), (4, 54819485), (5, 43855588), (7, 31325420), (10, 21927794), (14, 15662710), (20, 10963897), (28, 7831355), (35, 6265084), (49, 4475060), (70, 3132542), (98, 2237530), (140, 1566271), (196, 1118765), (245, 895012), (490, 447506), (980, 223753)]