388638520

素因数分解:

$2^3\times 5^1\times {\mathrm{9715963}}^1$

素因数の和:9715974

約数の個数: 16

約数和(自身を含む): 874436760

約数和(自身を除く): 485798240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9715963, 19431926, 38863852, 48579815, 77727704, 97159630, 194319260, 388638520]

約数ペア:

[(1, 388638520), (2, 194319260), (4, 97159630), (5, 77727704), (8, 48579815), (10, 38863852), (20, 19431926), (40, 9715963)]