20640213

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{10973}}^1$

素因数の和:11009

約数の個数: 24

約数和(自身を含む): 34238880

約数和(自身を除く): 13598667

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881, 10973, 32919, 98757, 120703, 208487, 362109, 625461, 1086327, 1876383, 2293357, 6880071, 20640213]

約数ペア:

[(1, 20640213), (3, 6880071), (9, 2293357), (11, 1876383), (19, 1086327), (33, 625461), (57, 362109), (99, 208487), (171, 120703), (209, 98757), (627, 32919), (1881, 10973)]