19644880

素因数分解:

$2^4\times 5^1\times {\mathrm{245561}}^1$

素因数の和:245574

約数の個数: 20

約数和(自身を含む): 45674532

約数和(自身を除く): 26029652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245561, 491122, 982244, 1227805, 1964488, 2455610, 3928976, 4911220, 9822440, 19644880]

約数ペア:

[(1, 19644880), (2, 9822440), (4, 4911220), (5, 3928976), (8, 2455610), (10, 1964488), (16, 1227805), (20, 982244), (40, 491122), (80, 245561)]