27948280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16249}}^1$

素因数の和:16303

約数の個数: 32

約数和(自身を含む): 64350000

約数和(自身を除く): 36401720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16249, 32498, 64996, 81245, 129992, 162490, 324980, 649960, 698707, 1397414, 2794828, 3493535, 5589656, 6987070, 13974140, 27948280]

約数ペア:

[(1, 27948280), (2, 13974140), (4, 6987070), (5, 5589656), (8, 3493535), (10, 2794828), (20, 1397414), (40, 698707), (43, 649960), (86, 324980), (172, 162490), (215, 129992), (344, 81245), (430, 64996), (860, 32498), (1720, 16249)]