20553880

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7039}}^1$

素因数の和:7123

約数の個数: 32

約数和(自身を含む): 46886400

約数和(自身を除く): 26332520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7039, 14078, 28156, 35195, 56312, 70390, 140780, 281560, 513847, 1027694, 2055388, 2569235, 4110776, 5138470, 10276940, 20553880]

約数ペア:

[(1, 20553880), (2, 10276940), (4, 5138470), (5, 4110776), (8, 2569235), (10, 2055388), (20, 1027694), (40, 513847), (73, 281560), (146, 140780), (292, 70390), (365, 56312), (584, 35195), (730, 28156), (1460, 14078), (2920, 7039)]