87147020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1\times {\mathrm{283}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 186792480

約数和(自身を除く): 99645460

約数列:

[1, 2, 4, 5, 10, 20, 89, 173, 178, 283, 346, 356, 445, 566, 692, 865, 890, 1132, 1415, 1730, 1780, 2830, 3460, 5660, 15397, 25187, 30794, 48959, 50374, 61588, 76985, 97918, 100748, 125935, 153970, 195836, 244795, 251870, 307940, 489590, 503740, 979180, 4357351, 8714702, 17429404, 21786755, 43573510, 87147020]

約数ペア:

[(1, 87147020), (2, 43573510), (4, 21786755), (5, 17429404), (10, 8714702), (20, 4357351), (89, 979180), (173, 503740), (178, 489590), (283, 307940), (346, 251870), (356, 244795), (445, 195836), (566, 153970), (692, 125935), (865, 100748), (890, 97918), (1132, 76985), (1415, 61588), (1730, 50374), (1780, 48959), (2830, 30794), (3460, 25187), (5660, 15397)]