19972810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{13967}}^1$

素因数の和:13998

約数の個数: 32

約数和(自身を含む): 42239232

約数和(自身を除く): 22266422

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 13967, 27934, 69835, 139670, 153637, 181571, 307274, 363142, 768185, 907855, 1536370, 1815710, 1997281, 3994562, 9986405, 19972810]

約数ペア:

[(1, 19972810), (2, 9986405), (5, 3994562), (10, 1997281), (11, 1815710), (13, 1536370), (22, 907855), (26, 768185), (55, 363142), (65, 307274), (110, 181571), (130, 153637), (143, 139670), (286, 69835), (715, 27934), (1430, 13967)]