30387980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{217057}}^1$

素因数の和:217073

約数の個数: 24

約数和(自身を含む): 72931488

約数和(自身を除く): 42543508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 217057, 434114, 868228, 1085285, 1519399, 2170570, 3038798, 4341140, 6077596, 7596995, 15193990, 30387980]

約数ペア:

[(1, 30387980), (2, 15193990), (4, 7596995), (5, 6077596), (7, 4341140), (10, 3038798), (14, 2170570), (20, 1519399), (28, 1085285), (35, 868228), (70, 434114), (140, 217057)]