123355280

素因数分解:

$2^4\times 5^1\times {\mathrm{1541941}}^1$

素因数の和:1541954

約数の個数: 20

約数和(自身を含む): 286801212

約数和(自身を除く): 163445932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1541941, 3083882, 6167764, 7709705, 12335528, 15419410, 24671056, 30838820, 61677640, 123355280]

約数ペア:

[(1, 123355280), (2, 61677640), (4, 30838820), (5, 24671056), (8, 15419410), (10, 12335528), (16, 7709705), (20, 6167764), (40, 3083882), (80, 1541941)]