39998084

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 82790400

約数和(自身を除く): 42792316

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 139, 172, 239, 278, 301, 478, 556, 602, 956, 973, 1204, 1673, 1946, 3346, 3892, 5977, 6692, 10277, 11954, 20554, 23908, 33221, 41108, 41839, 66442, 71939, 83678, 132884, 143878, 167356, 232547, 287756, 465094, 930188, 1428503, 2857006, 5714012, 9999521, 19999042, 39998084]

約数ペア:

[(1, 39998084), (2, 19999042), (4, 9999521), (7, 5714012), (14, 2857006), (28, 1428503), (43, 930188), (86, 465094), (139, 287756), (172, 232547), (239, 167356), (278, 143878), (301, 132884), (478, 83678), (556, 71939), (602, 66442), (956, 41839), (973, 41108), (1204, 33221), (1673, 23908), (1946, 20554), (3346, 11954), (3892, 10277), (5977, 6692)]