84171980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{38611}}^1$

素因数の和:38729

約数の個数: 24

約数和(自身を含む): 178387440

約数和(自身を除く): 94215460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 38611, 77222, 154444, 193055, 386110, 772220, 4208599, 8417198, 16834396, 21042995, 42085990, 84171980]

約数ペア:

[(1, 84171980), (2, 42085990), (4, 21042995), (5, 16834396), (10, 8417198), (20, 4208599), (109, 772220), (218, 386110), (436, 193055), (545, 154444), (1090, 77222), (2180, 38611)]