21719320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77569}}^1$

素因数の和:77587

約数の個数: 32

約数和(自身を含む): 55850400

約数和(自身を除く): 34131080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77569, 155138, 310276, 387845, 542983, 620552, 775690, 1085966, 1551380, 2171932, 2714915, 3102760, 4343864, 5429830, 10859660, 21719320]

約数ペア:

[(1, 21719320), (2, 10859660), (4, 5429830), (5, 4343864), (7, 3102760), (8, 2714915), (10, 2171932), (14, 1551380), (20, 1085966), (28, 775690), (35, 620552), (40, 542983), (56, 387845), (70, 310276), (140, 155138), (280, 77569)]