21371163

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{761}}^1$

素因数の和:835

約数の個数: 32

約数和(自身を含む): 33357312

約数和(自身を除く): 11986149

約数列:

[1, 3, 11, 23, 33, 37, 69, 111, 253, 407, 759, 761, 851, 1221, 2283, 2553, 8371, 9361, 17503, 25113, 28083, 28157, 52509, 84471, 192533, 309727, 577599, 647611, 929181, 1942833, 7123721, 21371163]

約数ペア:

[(1, 21371163), (3, 7123721), (11, 1942833), (23, 929181), (33, 647611), (37, 577599), (69, 309727), (111, 192533), (253, 84471), (407, 52509), (759, 28157), (761, 28083), (851, 25113), (1221, 17503), (2283, 9361), (2553, 8371)]