20959708

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4003}}^1$

素因数の和:4042

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 27472676

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 4003, 5236, 8006, 16012, 28021, 44033, 56042, 68051, 88066, 112084, 136102, 176132, 272204, 308231, 476357, 616462, 748561, 952714, 1232924, 1497122, 1905428, 2994244, 5239927, 10479854, 20959708]

約数ペア:

[(1, 20959708), (2, 10479854), (4, 5239927), (7, 2994244), (11, 1905428), (14, 1497122), (17, 1232924), (22, 952714), (28, 748561), (34, 616462), (44, 476357), (68, 308231), (77, 272204), (119, 176132), (154, 136102), (187, 112084), (238, 88066), (308, 68051), (374, 56042), (476, 44033), (748, 28021), (1309, 16012), (2618, 8006), (4003, 5236)]