19810911890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{25728457}}^1$

素因数の和:25728482

約数の個数: 32

約数和(自身を含む): 44458775424

約数和(自身を除く): 24647863534

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 25728457, 51456914, 128642285, 180099199, 257284570, 283013027, 360198398, 566026054, 900495995, 1415065135, 1800991990, 1981091189, 2830130270, 3962182378, 9905455945, 19810911890]

約数ペア:

[(1, 19810911890), (2, 9905455945), (5, 3962182378), (7, 2830130270), (10, 1981091189), (11, 1800991990), (14, 1415065135), (22, 900495995), (35, 566026054), (55, 360198398), (70, 283013027), (77, 257284570), (110, 180099199), (154, 128642285), (385, 51456914), (770, 25728457)]