21326025

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{829}}^1$

素因数の和:863

約数の個数: 48

約数和(自身を含む): 41168000

約数和(自身を除く): 19841975

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 343, 525, 735, 829, 1029, 1225, 1715, 2487, 3675, 4145, 5145, 5803, 8575, 12435, 17409, 20725, 25725, 29015, 40621, 62175, 87045, 121863, 145075, 203105, 284347, 435225, 609315, 853041, 1015525, 1421735, 3046575, 4265205, 7108675, 21326025]

約数ペア:

[(1, 21326025), (3, 7108675), (5, 4265205), (7, 3046575), (15, 1421735), (21, 1015525), (25, 853041), (35, 609315), (49, 435225), (75, 284347), (105, 203105), (147, 145075), (175, 121863), (245, 87045), (343, 62175), (525, 40621), (735, 29015), (829, 25725), (1029, 20725), (1225, 17409), (1715, 12435), (2487, 8575), (3675, 5803), (4145, 5145)]