20007320

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2539}}^1$

素因数の和:2747

約数の個数: 32

約数和(自身を含む): 45262800

約数和(自身を除く): 25255480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2539, 3940, 5078, 7880, 10156, 12695, 20312, 25390, 50780, 101560, 500183, 1000366, 2000732, 2500915, 4001464, 5001830, 10003660, 20007320]

約数ペア:

[(1, 20007320), (2, 10003660), (4, 5001830), (5, 4001464), (8, 2500915), (10, 2000732), (20, 1000366), (40, 500183), (197, 101560), (394, 50780), (788, 25390), (985, 20312), (1576, 12695), (1970, 10156), (2539, 7880), (3940, 5078)]