20213205904

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{681773}}^1$

素因数の和:681907

約数の個数: 40

約数和(自身を含む): 41847288120

約数和(自身を除く): 21634082216

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 109, 136, 218, 272, 436, 872, 1744, 1853, 3706, 7412, 14824, 29648, 681773, 1363546, 2727092, 5454184, 10908368, 11590141, 23180282, 46360564, 74313257, 92721128, 148626514, 185442256, 297253028, 594506056, 1189012112, 1263325369, 2526650738, 5053301476, 10106602952, 20213205904]

約数ペア:

[(1, 20213205904), (2, 10106602952), (4, 5053301476), (8, 2526650738), (16, 1263325369), (17, 1189012112), (34, 594506056), (68, 297253028), (109, 185442256), (136, 148626514), (218, 92721128), (272, 74313257), (436, 46360564), (872, 23180282), (1744, 11590141), (1853, 10908368), (3706, 5454184), (7412, 2727092), (14824, 1363546), (29648, 681773)]