19971490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{701}}^1$

素因数の和:763

約数の個数: 64

約数和(自身を含む): 46096128

約数和(自身を除く): 26124638

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 37, 55, 70, 74, 77, 110, 154, 185, 259, 370, 385, 407, 518, 701, 770, 814, 1295, 1402, 2035, 2590, 2849, 3505, 4070, 4907, 5698, 7010, 7711, 9814, 14245, 15422, 24535, 25937, 28490, 38555, 49070, 51874, 53977, 77110, 107954, 129685, 181559, 259370, 269885, 285307, 363118, 539770, 570614, 907795, 1426535, 1815590, 1997149, 2853070, 3994298, 9985745, 19971490]

約数ペア:

[(1, 19971490), (2, 9985745), (5, 3994298), (7, 2853070), (10, 1997149), (11, 1815590), (14, 1426535), (22, 907795), (35, 570614), (37, 539770), (55, 363118), (70, 285307), (74, 269885), (77, 259370), (110, 181559), (154, 129685), (185, 107954), (259, 77110), (370, 53977), (385, 51874), (407, 49070), (518, 38555), (701, 28490), (770, 25937), (814, 24535), (1295, 15422), (1402, 14245), (2035, 9814), (2590, 7711), (2849, 7010), (3505, 5698), (4070, 4907)]