20009913

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{103}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 34784256

約数和(自身を除く): 14774343

約数列:

[1, 3, 7, 11, 21, 29, 33, 77, 87, 103, 203, 231, 309, 319, 609, 721, 841, 957, 1133, 2163, 2233, 2523, 2987, 3399, 5887, 6699, 7931, 8961, 9251, 17661, 20909, 23793, 27753, 32857, 62727, 64757, 86623, 98571, 194271, 229999, 259869, 606361, 689997, 952853, 1819083, 2858559, 6669971, 20009913]

約数ペア:

[(1, 20009913), (3, 6669971), (7, 2858559), (11, 1819083), (21, 952853), (29, 689997), (33, 606361), (77, 259869), (87, 229999), (103, 194271), (203, 98571), (231, 86623), (309, 64757), (319, 62727), (609, 32857), (721, 27753), (841, 23793), (957, 20909), (1133, 17661), (2163, 9251), (2233, 8961), (2523, 7931), (2987, 6699), (3399, 5887)]