21010002775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{444421}}^1$

素因数の和:444523

約数の個数: 24

約数和(自身を含む): 27333730688

約数和(自身を除く): 6323727913

約数列:

[1, 5, 25, 31, 61, 155, 305, 775, 1525, 1891, 9455, 47275, 444421, 2222105, 11110525, 13777051, 27109681, 68885255, 135548405, 344426275, 677742025, 840400111, 4202000555, 21010002775]

約数ペア:

[(1, 21010002775), (5, 4202000555), (25, 840400111), (31, 677742025), (61, 344426275), (155, 135548405), (305, 68885255), (775, 27109681), (1525, 13777051), (1891, 11110525), (9455, 2222105), (47275, 444421)]