21129801

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 37933056

約数和(自身を除く): 16803255

約数列:

[1, 3, 7, 11, 21, 23, 33, 41, 69, 77, 97, 123, 161, 231, 253, 287, 291, 451, 483, 679, 759, 861, 943, 1067, 1353, 1771, 2037, 2231, 2829, 3157, 3201, 3977, 5313, 6601, 6693, 7469, 9471, 10373, 11931, 15617, 19803, 22407, 24541, 27839, 31119, 43747, 46851, 72611, 73623, 83517, 91471, 131241, 171787, 217833, 274413, 306229, 515361, 640297, 918687, 1006181, 1920891, 3018543, 7043267, 21129801]

約数ペア:

[(1, 21129801), (3, 7043267), (7, 3018543), (11, 1920891), (21, 1006181), (23, 918687), (33, 640297), (41, 515361), (69, 306229), (77, 274413), (97, 217833), (123, 171787), (161, 131241), (231, 91471), (253, 83517), (287, 73623), (291, 72611), (451, 46851), (483, 43747), (679, 31119), (759, 27839), (861, 24541), (943, 22407), (1067, 19803), (1353, 15617), (1771, 11931), (2037, 10373), (2231, 9471), (2829, 7469), (3157, 6693), (3201, 6601), (3977, 5313)]