20665251

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4357}}^1$

素因数の和:4411

約数の個数: 24

約数和(自身を含む): 32632704

約数和(自身を除く): 11967453

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 4357, 4743, 13071, 39213, 74069, 135067, 222207, 405201, 666621, 1215603, 2296139, 6888417, 20665251]

約数ペア:

[(1, 20665251), (3, 6888417), (9, 2296139), (17, 1215603), (31, 666621), (51, 405201), (93, 222207), (153, 135067), (279, 74069), (527, 39213), (1581, 13071), (4357, 4743)]