19720998

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{967}}^1$

素因数の和:1089

約数の個数: 48

約数和(自身を含む): 47114496

約数和(自身を除く): 27393498

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 103, 198, 206, 309, 618, 927, 967, 1133, 1854, 1934, 2266, 2901, 3399, 5802, 6798, 8703, 10197, 10637, 17406, 20394, 21274, 31911, 63822, 95733, 99601, 191466, 199202, 298803, 597606, 896409, 1095611, 1792818, 2191222, 3286833, 6573666, 9860499, 19720998]

約数ペア:

[(1, 19720998), (2, 9860499), (3, 6573666), (6, 3286833), (9, 2191222), (11, 1792818), (18, 1095611), (22, 896409), (33, 597606), (66, 298803), (99, 199202), (103, 191466), (198, 99601), (206, 95733), (309, 63822), (618, 31911), (927, 21274), (967, 20394), (1133, 17406), (1854, 10637), (1934, 10197), (2266, 8703), (2901, 6798), (3399, 5802)]