21378278

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{2441}}^1$

素因数の和:2623

約数の個数: 16

約数和(自身を含む): 33406560

約数和(自身を除く): 12028282

約数列:

[1, 2, 29, 58, 151, 302, 2441, 4379, 4882, 8758, 70789, 141578, 368591, 737182, 10689139, 21378278]

約数ペア:

[(1, 21378278), (2, 10689139), (29, 737182), (58, 368591), (151, 141578), (302, 70789), (2441, 8758), (4379, 4882)]