21941348

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{431}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 23781532

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 89, 143, 178, 286, 356, 431, 572, 862, 979, 1157, 1724, 1958, 2314, 3916, 4628, 4741, 5603, 9482, 11206, 12727, 18964, 22412, 25454, 38359, 50908, 61633, 76718, 123266, 153436, 246532, 421949, 498667, 843898, 997334, 1687796, 1994668, 5485337, 10970674, 21941348]

約数ペア:

[(1, 21941348), (2, 10970674), (4, 5485337), (11, 1994668), (13, 1687796), (22, 997334), (26, 843898), (44, 498667), (52, 421949), (89, 246532), (143, 153436), (178, 123266), (286, 76718), (356, 61633), (431, 50908), (572, 38359), (862, 25454), (979, 22412), (1157, 18964), (1724, 12727), (1958, 11206), (2314, 9482), (3916, 5603), (4628, 4741)]