20790520

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{761}}^1$

素因数の和:1455

約数の個数: 32

約数和(自身を含む): 46908720

約数和(自身を除く): 26118200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 761, 1366, 1522, 2732, 3044, 3415, 3805, 5464, 6088, 6830, 7610, 13660, 15220, 27320, 30440, 519763, 1039526, 2079052, 2598815, 4158104, 5197630, 10395260, 20790520]

約数ペア:

[(1, 20790520), (2, 10395260), (4, 5197630), (5, 4158104), (8, 2598815), (10, 2079052), (20, 1039526), (40, 519763), (683, 30440), (761, 27320), (1366, 15220), (1522, 13660), (2732, 7610), (3044, 6830), (3415, 6088), (3805, 5464)]