30939980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81421}}^1$

素因数の和:81449

約数の個数: 24

約数和(自身を含む): 68394480

約数和(自身を除く): 37454500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 81421, 162842, 325684, 407105, 814210, 1546999, 1628420, 3093998, 6187996, 7734995, 15469990, 30939980]

約数ペア:

[(1, 30939980), (2, 15469990), (4, 7734995), (5, 6187996), (10, 3093998), (19, 1628420), (20, 1546999), (38, 814210), (76, 407105), (95, 325684), (190, 162842), (380, 81421)]