21215542

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1\times {\mathrm{317}}^1$

素因数の和:735

約数の個数: 16

約数和(自身を含む): 32321520

約数和(自身を除く): 11105978

約数列:

[1, 2, 109, 218, 307, 317, 614, 634, 33463, 34553, 66926, 69106, 97319, 194638, 10607771, 21215542]

約数ペア:

[(1, 21215542), (2, 10607771), (109, 194638), (218, 97319), (307, 69106), (317, 66926), (614, 34553), (634, 33463)]