20121989307

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{24019}}^1$

素因数の和:24216

約数の個数: 48

約数和(自身を含む): 32202172800

約数和(自身を除く): 12080183493

約数列:

[1, 3, 7, 21, 41, 49, 123, 139, 147, 287, 417, 861, 973, 2009, 2919, 5699, 6027, 6811, 17097, 20433, 24019, 39893, 72057, 119679, 168133, 279251, 504399, 837753, 984779, 1176931, 2954337, 3338641, 3530793, 6893453, 10015923, 20680359, 23370487, 48254171, 70111461, 136884281, 144762513, 163593409, 410652843, 490780227, 958189967, 2874569901, 6707329769, 20121989307]

約数ペア:

[(1, 20121989307), (3, 6707329769), (7, 2874569901), (21, 958189967), (41, 490780227), (49, 410652843), (123, 163593409), (139, 144762513), (147, 136884281), (287, 70111461), (417, 48254171), (861, 23370487), (973, 20680359), (2009, 10015923), (2919, 6893453), (5699, 3530793), (6027, 3338641), (6811, 2954337), (17097, 1176931), (20433, 984779), (24019, 837753), (39893, 504399), (72057, 279251), (119679, 168133)]