19690825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 31176576

約数和(自身を除く): 11485751

約数列:

[1, 5, 7, 11, 25, 35, 53, 55, 77, 175, 193, 265, 275, 371, 385, 583, 965, 1325, 1351, 1855, 1925, 2123, 2915, 4081, 4825, 6755, 9275, 10229, 10615, 14575, 14861, 20405, 33775, 51145, 53075, 71603, 74305, 102025, 112519, 255725, 358015, 371525, 562595, 787633, 1790075, 2812975, 3938165, 19690825]

約数ペア:

[(1, 19690825), (5, 3938165), (7, 2812975), (11, 1790075), (25, 787633), (35, 562595), (53, 371525), (55, 358015), (77, 255725), (175, 112519), (193, 102025), (265, 74305), (275, 71603), (371, 53075), (385, 51145), (583, 33775), (965, 20405), (1325, 14861), (1351, 14575), (1855, 10615), (1925, 10229), (2123, 9275), (2915, 6755), (4081, 4825)]