84778660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{641}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 189287280

約数和(自身を除く): 104508620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 389, 641, 778, 1282, 1556, 1945, 2564, 3205, 3890, 6410, 6613, 7780, 10897, 12820, 13226, 21794, 26452, 33065, 43588, 54485, 66130, 108970, 132260, 217940, 249349, 498698, 997396, 1246745, 2493490, 4238933, 4986980, 8477866, 16955732, 21194665, 42389330, 84778660]

約数ペア:

[(1, 84778660), (2, 42389330), (4, 21194665), (5, 16955732), (10, 8477866), (17, 4986980), (20, 4238933), (34, 2493490), (68, 1246745), (85, 997396), (170, 498698), (340, 249349), (389, 217940), (641, 132260), (778, 108970), (1282, 66130), (1556, 54485), (1945, 43588), (2564, 33065), (3205, 26452), (3890, 21794), (6410, 13226), (6613, 12820), (7780, 10897)]