20449490

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 37802160

約数和(自身を除く): 17352670

約数列:

[1, 2, 5, 10, 73, 109, 146, 218, 257, 365, 514, 545, 730, 1090, 1285, 2570, 7957, 15914, 18761, 28013, 37522, 39785, 56026, 79570, 93805, 140065, 187610, 280130, 2044949, 4089898, 10224745, 20449490]

約数ペア:

[(1, 20449490), (2, 10224745), (5, 4089898), (10, 2044949), (73, 280130), (109, 187610), (146, 140065), (218, 93805), (257, 79570), (365, 56026), (514, 39785), (545, 37522), (730, 28013), (1090, 18761), (1285, 15914), (2570, 7957)]