204519140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{1153}}^1$

素因数の和:1357

約数の個数: 72

約数和(自身を含む): 502807032

約数和(自身を除く): 298287892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 181, 196, 245, 362, 490, 724, 905, 980, 1153, 1267, 1810, 2306, 2534, 3620, 4612, 5068, 5765, 6335, 8071, 8869, 11530, 12670, 16142, 17738, 23060, 25340, 32284, 35476, 40355, 44345, 56497, 80710, 88690, 112994, 161420, 177380, 208693, 225988, 282485, 417386, 564970, 834772, 1043465, 1129940, 1460851, 2086930, 2921702, 4173860, 5843404, 7304255, 10225957, 14608510, 20451914, 29217020, 40903828, 51129785, 102259570, 204519140]

約数ペア:

[(1, 204519140), (2, 102259570), (4, 51129785), (5, 40903828), (7, 29217020), (10, 20451914), (14, 14608510), (20, 10225957), (28, 7304255), (35, 5843404), (49, 4173860), (70, 2921702), (98, 2086930), (140, 1460851), (181, 1129940), (196, 1043465), (245, 834772), (362, 564970), (490, 417386), (724, 282485), (905, 225988), (980, 208693), (1153, 177380), (1267, 161420), (1810, 112994), (2306, 88690), (2534, 80710), (3620, 56497), (4612, 44345), (5068, 40355), (5765, 35476), (6335, 32284), (8071, 25340), (8869, 23060), (11530, 17738), (12670, 16142)]