127816400

素因数分解:

$2^4\times 5^2\times {\mathrm{319541}}^1$

素因数の和:319559

約数の個数: 30

約数和(自身を含む): 307079862

約数和(自身を除く): 179263462

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 319541, 639082, 1278164, 1597705, 2556328, 3195410, 5112656, 6390820, 7988525, 12781640, 15977050, 25563280, 31954100, 63908200, 127816400]

約数ペア:

[(1, 127816400), (2, 63908200), (4, 31954100), (5, 25563280), (8, 15977050), (10, 12781640), (16, 7988525), (20, 6390820), (25, 5112656), (40, 3195410), (50, 2556328), (80, 1597705), (100, 1278164), (200, 639082), (400, 319541)]