20343612440

素因数分解:

$2^3\times 5^1\times {\mathrm{13397}}^1\times {\mathrm{37963}}^1$

素因数の和:51371

約数の個数: 32

約数和(自身を含む): 45777750480

約数和(自身を除く): 25434138040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 13397, 26794, 37963, 53588, 66985, 75926, 107176, 133970, 151852, 189815, 267940, 303704, 379630, 535880, 759260, 1518520, 508590311, 1017180622, 2034361244, 2542951555, 4068722488, 5085903110, 10171806220, 20343612440]

約数ペア:

[(1, 20343612440), (2, 10171806220), (4, 5085903110), (5, 4068722488), (8, 2542951555), (10, 2034361244), (20, 1017180622), (40, 508590311), (13397, 1518520), (26794, 759260), (37963, 535880), (53588, 379630), (66985, 303704), (75926, 267940), (107176, 189815), (133970, 151852)]