21443015

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^2\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 36

約数和(自身を含む): 30007992

約数和(自身を除く): 8564977

約数列:

[1, 5, 11, 23, 55, 67, 115, 121, 253, 335, 529, 605, 737, 1265, 1541, 2645, 2783, 3685, 5819, 7705, 8107, 13915, 16951, 29095, 35443, 40535, 64009, 84755, 177215, 186461, 320045, 389873, 932305, 1949365, 4288603, 21443015]

約数ペア:

[(1, 21443015), (5, 4288603), (11, 1949365), (23, 932305), (55, 389873), (67, 320045), (115, 186461), (121, 177215), (253, 84755), (335, 64009), (529, 40535), (605, 35443), (737, 29095), (1265, 16951), (1541, 13915), (2645, 8107), (2783, 7705), (3685, 5819)]