18438980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131707}}^1$

素因数の和:131723

約数の個数: 24

約数和(自身を含む): 44253888

約数和(自身を除く): 25814908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 131707, 263414, 526828, 658535, 921949, 1317070, 1843898, 2634140, 3687796, 4609745, 9219490, 18438980]

約数ペア:

[(1, 18438980), (2, 9219490), (4, 4609745), (5, 3687796), (7, 2634140), (10, 1843898), (14, 1317070), (20, 921949), (28, 658535), (35, 526828), (70, 263414), (140, 131707)]