51604720

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{997}}^1$

素因数の和:1657

約数の個数: 40

約数和(自身を含む): 120286944

約数和(自身を除く): 68682224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 997, 1294, 1994, 2588, 3235, 3988, 4985, 5176, 6470, 7976, 9970, 10352, 12940, 15952, 19940, 25880, 39880, 51760, 79760, 645059, 1290118, 2580236, 3225295, 5160472, 6450590, 10320944, 12901180, 25802360, 51604720]

約数ペア:

[(1, 51604720), (2, 25802360), (4, 12901180), (5, 10320944), (8, 6450590), (10, 5160472), (16, 3225295), (20, 2580236), (40, 1290118), (80, 645059), (647, 79760), (997, 51760), (1294, 39880), (1994, 25880), (2588, 19940), (3235, 15952), (3988, 12940), (4985, 10352), (5176, 9970), (6470, 7976)]