21031144

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{619}}^1$

素因数の和:793

約数の個数: 32

約数和(自身を含む): 41068800

約数和(自身を除く): 20037656

約数列:

[1, 2, 4, 8, 31, 62, 124, 137, 248, 274, 548, 619, 1096, 1238, 2476, 4247, 4952, 8494, 16988, 19189, 33976, 38378, 76756, 84803, 153512, 169606, 339212, 678424, 2628893, 5257786, 10515572, 21031144]

約数ペア:

[(1, 21031144), (2, 10515572), (4, 5257786), (8, 2628893), (31, 678424), (62, 339212), (124, 169606), (137, 153512), (248, 84803), (274, 76756), (548, 38378), (619, 33976), (1096, 19189), (1238, 16988), (2476, 8494), (4247, 4952)]