21512295

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2203}}^1$

素因数の和:2252

約数の個数: 48

約数和(自身を含む): 44009472

約数和(自身を除く): 22497177

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1953, 2203, 3255, 6609, 9765, 11015, 15421, 19827, 33045, 46263, 68293, 77105, 99135, 138789, 204879, 231315, 341465, 478051, 614637, 693945, 1024395, 1434153, 2390255, 3073185, 4302459, 7170765, 21512295]

約数ペア:

[(1, 21512295), (3, 7170765), (5, 4302459), (7, 3073185), (9, 2390255), (15, 1434153), (21, 1024395), (31, 693945), (35, 614637), (45, 478051), (63, 341465), (93, 231315), (105, 204879), (155, 138789), (217, 99135), (279, 77105), (315, 68293), (465, 46263), (651, 33045), (1085, 19827), (1395, 15421), (1953, 11015), (2203, 9765), (3255, 6609)]