19904778

素因数分解:

$2^1\times 3^4\times {\mathrm{122869}}^1$

素因数の和:122883

約数の個数: 20

約数和(自身を含む): 44601810

約数和(自身を除く): 24697032

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 122869, 245738, 368607, 737214, 1105821, 2211642, 3317463, 6634926, 9952389, 19904778]

約数ペア:

[(1, 19904778), (2, 9952389), (3, 6634926), (6, 3317463), (9, 2211642), (18, 1105821), (27, 737214), (54, 368607), (81, 245738), (162, 122869)]