21953493

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:306

約数の個数: 36

約数和(自身を含む): 34770060

約数和(自身を除く): 12816567

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 233, 261, 361, 551, 699, 1083, 1653, 2097, 3249, 4427, 4959, 6757, 10469, 13281, 20271, 31407, 39843, 60813, 84113, 94221, 128383, 252339, 385149, 757017, 1155447, 2439277, 7317831, 21953493]

約数ペア:

[(1, 21953493), (3, 7317831), (9, 2439277), (19, 1155447), (29, 757017), (57, 385149), (87, 252339), (171, 128383), (233, 94221), (261, 84113), (361, 60813), (551, 39843), (699, 31407), (1083, 20271), (1653, 13281), (2097, 10469), (3249, 6757), (4427, 4959)]