20679440

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3541}}^1$

素因数の和:3627

約数の個数: 40

約数和(自身を含む): 48752088

約数和(自身を除く): 28072648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3541, 5840, 7082, 14164, 17705, 28328, 35410, 56656, 70820, 141640, 258493, 283280, 516986, 1033972, 1292465, 2067944, 2584930, 4135888, 5169860, 10339720, 20679440]

約数ペア:

[(1, 20679440), (2, 10339720), (4, 5169860), (5, 4135888), (8, 2584930), (10, 2067944), (16, 1292465), (20, 1033972), (40, 516986), (73, 283280), (80, 258493), (146, 141640), (292, 70820), (365, 56656), (584, 35410), (730, 28328), (1168, 17705), (1460, 14164), (2920, 7082), (3541, 5840)]