1008521720

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{12689}}^1$

素因数の和:14687

約数の個数: 32

約数和(自身を含む): 2270494800

約数和(自身を除く): 1261973080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 12689, 15896, 19870, 25378, 39740, 50756, 63445, 79480, 101512, 126890, 253780, 507560, 25213043, 50426086, 100852172, 126065215, 201704344, 252130430, 504260860, 1008521720]

約数ペア:

[(1, 1008521720), (2, 504260860), (4, 252130430), (5, 201704344), (8, 126065215), (10, 100852172), (20, 50426086), (40, 25213043), (1987, 507560), (3974, 253780), (7948, 126890), (9935, 101512), (12689, 79480), (15896, 63445), (19870, 50756), (25378, 39740)]