78980420

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{25153}}^1$

素因数の和:25319

約数の個数: 24

約数和(自身を含む): 166921944

約数和(自身を除く): 87941524

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 25153, 50306, 100612, 125765, 251530, 503060, 3949021, 7898042, 15796084, 19745105, 39490210, 78980420]

約数ペア:

[(1, 78980420), (2, 39490210), (4, 19745105), (5, 15796084), (10, 7898042), (20, 3949021), (157, 503060), (314, 251530), (628, 125765), (785, 100612), (1570, 50306), (3140, 25153)]