21862040

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7487}}^1$

素因数の和:7571

約数の個数: 32

約数和(自身を含む): 49870080

約数和(自身を除く): 28008040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7487, 14974, 29948, 37435, 59896, 74870, 149740, 299480, 546551, 1093102, 2186204, 2732755, 4372408, 5465510, 10931020, 21862040]

約数ペア:

[(1, 21862040), (2, 10931020), (4, 5465510), (5, 4372408), (8, 2732755), (10, 2186204), (20, 1093102), (40, 546551), (73, 299480), (146, 149740), (292, 74870), (365, 59896), (584, 37435), (730, 29948), (1460, 14974), (2920, 7487)]