21109055

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:128

約数の個数: 48

約数和(自身を含む): 30566592

約数和(自身を除く): 9457537

約数列:

[1, 5, 11, 23, 37, 41, 55, 115, 121, 185, 205, 253, 407, 451, 605, 851, 943, 1265, 1517, 2035, 2255, 2783, 4255, 4477, 4715, 4961, 7585, 9361, 10373, 13915, 16687, 22385, 24805, 34891, 46805, 51865, 83435, 102971, 114103, 174455, 183557, 383801, 514855, 570515, 917785, 1919005, 4221811, 21109055]

約数ペア:

[(1, 21109055), (5, 4221811), (11, 1919005), (23, 917785), (37, 570515), (41, 514855), (55, 383801), (115, 183557), (121, 174455), (185, 114103), (205, 102971), (253, 83435), (407, 51865), (451, 46805), (605, 34891), (851, 24805), (943, 22385), (1265, 16687), (1517, 13915), (2035, 10373), (2255, 9361), (2783, 7585), (4255, 4961), (4477, 4715)]