21365091

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{853}}^1$

素因数の和:904

約数の個数: 36

約数和(自身を含む): 35437584

約数和(自身を除く): 14072493

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 121, 207, 253, 363, 759, 853, 1089, 2277, 2559, 2783, 7677, 8349, 9383, 19619, 25047, 28149, 58857, 84447, 103213, 176571, 215809, 309639, 647427, 928917, 1942281, 2373899, 7121697, 21365091]

約数ペア:

[(1, 21365091), (3, 7121697), (9, 2373899), (11, 1942281), (23, 928917), (33, 647427), (69, 309639), (99, 215809), (121, 176571), (207, 103213), (253, 84447), (363, 58857), (759, 28149), (853, 25047), (1089, 19619), (2277, 9383), (2559, 8349), (2783, 7677)]