19013995

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 64

約数和(自身を含む): 31933440

約数和(自身を除く): 12919445

約数列:

[1, 5, 7, 11, 13, 29, 35, 55, 65, 77, 91, 131, 143, 145, 203, 319, 377, 385, 455, 655, 715, 917, 1001, 1015, 1441, 1595, 1703, 1885, 2233, 2639, 3799, 4147, 4585, 5005, 7205, 8515, 10087, 11165, 11921, 13195, 18733, 18995, 20735, 26593, 29029, 41789, 49387, 50435, 59605, 93665, 131131, 132965, 145145, 208945, 246935, 292523, 345709, 543257, 655655, 1462615, 1728545, 2716285, 3802799, 19013995]

約数ペア:

[(1, 19013995), (5, 3802799), (7, 2716285), (11, 1728545), (13, 1462615), (29, 655655), (35, 543257), (55, 345709), (65, 292523), (77, 246935), (91, 208945), (131, 145145), (143, 132965), (145, 131131), (203, 93665), (319, 59605), (377, 50435), (385, 49387), (455, 41789), (655, 29029), (715, 26593), (917, 20735), (1001, 18995), (1015, 18733), (1441, 13195), (1595, 11921), (1703, 11165), (1885, 10087), (2233, 8515), (2639, 7205), (3799, 5005), (4147, 4585)]