81796208

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5387}}^1$

素因数の和:5481

約数の個数: 40

約数和(自身を含む): 173041008

約数和(自身を除く): 91244800

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1898, 3796, 5387, 7592, 10774, 15184, 21548, 43096, 70031, 86192, 140062, 280124, 393251, 560248, 786502, 1120496, 1573004, 3146008, 5112263, 6292016, 10224526, 20449052, 40898104, 81796208]

約数ペア:

[(1, 81796208), (2, 40898104), (4, 20449052), (8, 10224526), (13, 6292016), (16, 5112263), (26, 3146008), (52, 1573004), (73, 1120496), (104, 786502), (146, 560248), (208, 393251), (292, 280124), (584, 140062), (949, 86192), (1168, 70031), (1898, 43096), (3796, 21548), (5387, 15184), (7592, 10774)]