21037544

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 43985760

約数和(自身を除く): 22948216

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 103, 121, 206, 211, 242, 412, 422, 484, 824, 844, 968, 1133, 1688, 2266, 2321, 4532, 4642, 9064, 9284, 12463, 18568, 21733, 24926, 25531, 43466, 49852, 51062, 86932, 99704, 102124, 173864, 204248, 239063, 478126, 956252, 1912504, 2629693, 5259386, 10518772, 21037544]

約数ペア:

[(1, 21037544), (2, 10518772), (4, 5259386), (8, 2629693), (11, 1912504), (22, 956252), (44, 478126), (88, 239063), (103, 204248), (121, 173864), (206, 102124), (211, 99704), (242, 86932), (412, 51062), (422, 49852), (484, 43466), (824, 25531), (844, 24926), (968, 21733), (1133, 18568), (1688, 12463), (2266, 9284), (2321, 9064), (4532, 4642)]