19887472

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{112997}}^1$

素因数の和:113016

約数の個数: 20

約数和(自身を含む): 42035256

約数和(自身を除く): 22147784

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 112997, 225994, 451988, 903976, 1242967, 1807952, 2485934, 4971868, 9943736, 19887472]

約数ペア:

[(1, 19887472), (2, 9943736), (4, 4971868), (8, 2485934), (11, 1807952), (16, 1242967), (22, 903976), (44, 451988), (88, 225994), (176, 112997)]