21150268

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 36

約数和(自身を含む): 39727632

約数和(自身を除く): 18577364

約数列:

[1, 2, 4, 19, 38, 76, 97, 151, 194, 302, 361, 388, 604, 722, 1444, 1843, 2869, 3686, 5738, 7372, 11476, 14647, 29294, 35017, 54511, 58588, 70034, 109022, 140068, 218044, 278293, 556586, 1113172, 5287567, 10575134, 21150268]

約数ペア:

[(1, 21150268), (2, 10575134), (4, 5287567), (19, 1113172), (38, 556586), (76, 278293), (97, 218044), (151, 140068), (194, 109022), (302, 70034), (361, 58588), (388, 54511), (604, 35017), (722, 29294), (1444, 14647), (1843, 11476), (2869, 7372), (3686, 5738)]