21614960

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{997}}^1$

素因数の和:1281

約数の個数: 40

約数和(自身を含む): 50490816

約数和(自身を除く): 28875856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 997, 1084, 1355, 1994, 2168, 2710, 3988, 4336, 4985, 5420, 7976, 9970, 10840, 15952, 19940, 21680, 39880, 79760, 270187, 540374, 1080748, 1350935, 2161496, 2701870, 4322992, 5403740, 10807480, 21614960]

約数ペア:

[(1, 21614960), (2, 10807480), (4, 5403740), (5, 4322992), (8, 2701870), (10, 2161496), (16, 1350935), (20, 1080748), (40, 540374), (80, 270187), (271, 79760), (542, 39880), (997, 21680), (1084, 19940), (1355, 15952), (1994, 10840), (2168, 9970), (2710, 7976), (3988, 5420), (4336, 4985)]