21641986

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:306

約数の個数: 32

約数和(自身を含む): 35754048

約数和(自身を除く): 14112062

約数列:

[1, 2, 17, 34, 43, 86, 113, 131, 226, 262, 731, 1462, 1921, 2227, 3842, 4454, 4859, 5633, 9718, 11266, 14803, 29606, 82603, 95761, 165206, 191522, 251651, 503302, 636529, 1273058, 10820993, 21641986]

約数ペア:

[(1, 21641986), (2, 10820993), (17, 1273058), (34, 636529), (43, 503302), (86, 251651), (113, 191522), (131, 165206), (226, 95761), (262, 82603), (731, 29606), (1462, 14803), (1921, 11266), (2227, 9718), (3842, 5633), (4454, 4859)]