19196821

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 5317739

約数列:

[1, 7, 19, 37, 47, 83, 133, 259, 329, 581, 703, 893, 1577, 1739, 3071, 3901, 4921, 6251, 11039, 12173, 21497, 27307, 33041, 58349, 74119, 144337, 231287, 408443, 518833, 1010359, 2742403, 19196821]

約数ペア:

[(1, 19196821), (7, 2742403), (19, 1010359), (37, 518833), (47, 408443), (83, 231287), (133, 144337), (259, 74119), (329, 58349), (581, 33041), (703, 27307), (893, 21497), (1577, 12173), (1739, 11039), (3071, 6251), (3901, 4921)]