90721120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{81001}}^1$

素因数の和:81023

約数の個数: 48

約数和(自身を含む): 244950048

約数和(自身を除く): 154228928

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 81001, 162002, 324004, 405005, 567007, 648008, 810010, 1134014, 1296016, 1620020, 2268028, 2592032, 2835035, 3240040, 4536056, 5670070, 6480080, 9072112, 11340140, 12960160, 18144224, 22680280, 45360560, 90721120]

約数ペア:

[(1, 90721120), (2, 45360560), (4, 22680280), (5, 18144224), (7, 12960160), (8, 11340140), (10, 9072112), (14, 6480080), (16, 5670070), (20, 4536056), (28, 3240040), (32, 2835035), (35, 2592032), (40, 2268028), (56, 1620020), (70, 1296016), (80, 1134014), (112, 810010), (140, 648008), (160, 567007), (224, 405005), (280, 324004), (560, 162002), (1120, 81001)]