21680007

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{719}}^1$

素因数の和:787

約数の個数: 24

約数和(自身を含む): 31852800

約数和(自身を除く): 10172793

約数列:

[1, 3, 19, 23, 57, 69, 437, 529, 719, 1311, 1587, 2157, 10051, 13661, 16537, 30153, 40983, 49611, 314203, 380351, 942609, 1141053, 7226669, 21680007]

約数ペア:

[(1, 21680007), (3, 7226669), (19, 1141053), (23, 942609), (57, 380351), (69, 314203), (437, 49611), (529, 40983), (719, 30153), (1311, 16537), (1587, 13661), (2157, 10051)]