137438980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{981707}}^1$

素因数の和:981723

約数の個数: 24

約数和(自身を含む): 329853888

約数和(自身を除く): 192414908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 981707, 1963414, 3926828, 4908535, 6871949, 9817070, 13743898, 19634140, 27487796, 34359745, 68719490, 137438980]

約数ペア:

[(1, 137438980), (2, 68719490), (4, 34359745), (5, 27487796), (7, 19634140), (10, 13743898), (14, 9817070), (20, 6871949), (28, 4908535), (35, 3926828), (70, 1963414), (140, 981707)]