21981566165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{7151}}^1$

素因数の和:7338

約数の個数: 48

約数和(自身を含む): 30213824256

約数和(自身を除く): 8232258091

約数列:

[1, 5, 13, 19, 65, 95, 131, 247, 361, 655, 1235, 1703, 1805, 2489, 4693, 7151, 8515, 12445, 23465, 32357, 35755, 47291, 92963, 135869, 161785, 236455, 464815, 614783, 679345, 936781, 1766297, 2581511, 3073915, 4683905, 8831485, 12178153, 12907555, 17798839, 33559643, 60890765, 88994195, 167798215, 231384907, 338177941, 1156924535, 1690889705, 4396313233, 21981566165]

約数ペア:

[(1, 21981566165), (5, 4396313233), (13, 1690889705), (19, 1156924535), (65, 338177941), (95, 231384907), (131, 167798215), (247, 88994195), (361, 60890765), (655, 33559643), (1235, 17798839), (1703, 12907555), (1805, 12178153), (2489, 8831485), (4693, 4683905), (7151, 3073915), (8515, 2581511), (12445, 1766297), (23465, 936781), (32357, 679345), (35755, 614783), (47291, 464815), (92963, 236455), (135869, 161785)]