21169005

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 19473555

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 71, 139, 143, 165, 195, 213, 355, 417, 429, 695, 715, 781, 923, 1065, 1529, 1807, 2085, 2145, 2343, 2769, 3905, 4587, 4615, 5421, 7645, 9035, 9869, 10153, 11715, 13845, 19877, 22935, 27105, 29607, 30459, 49345, 50765, 59631, 99385, 108559, 128297, 148035, 152295, 298155, 325677, 384891, 542795, 641485, 1411267, 1628385, 1924455, 4233801, 7056335, 21169005]

約数ペア:

[(1, 21169005), (3, 7056335), (5, 4233801), (11, 1924455), (13, 1628385), (15, 1411267), (33, 641485), (39, 542795), (55, 384891), (65, 325677), (71, 298155), (139, 152295), (143, 148035), (165, 128297), (195, 108559), (213, 99385), (355, 59631), (417, 50765), (429, 49345), (695, 30459), (715, 29607), (781, 27105), (923, 22935), (1065, 19877), (1529, 13845), (1807, 11715), (2085, 10153), (2145, 9869), (2343, 9035), (2769, 7645), (3905, 5421), (4587, 4615)]