21378974

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{4441}}^1$

素因数の和:4555

約数の個数: 16

約数和(自身を含む): 33581520

約数和(自身を除く): 12202546

約数列:

[1, 2, 29, 58, 83, 166, 2407, 4441, 4814, 8882, 128789, 257578, 368603, 737206, 10689487, 21378974]

約数ペア:

[(1, 21378974), (2, 10689487), (29, 737206), (58, 368603), (83, 257578), (166, 128789), (2407, 8882), (4441, 4814)]