1388971580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{978149}}^1$

素因数の和:978229

約数の個数: 24

約数和(自身を含む): 2957925600

約数和(自身を除く): 1568954020

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 978149, 1956298, 3912596, 4890745, 9781490, 19562980, 69448579, 138897158, 277794316, 347242895, 694485790, 1388971580]

約数ペア:

[(1, 1388971580), (2, 694485790), (4, 347242895), (5, 277794316), (10, 138897158), (20, 69448579), (71, 19562980), (142, 9781490), (284, 4890745), (355, 3912596), (710, 1956298), (1420, 978149)]