21691754

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{331}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 38756352

約数和(自身を除く): 17064598

約数列:

[1, 2, 7, 14, 31, 62, 151, 217, 302, 331, 434, 662, 1057, 2114, 2317, 4634, 4681, 9362, 10261, 20522, 32767, 49981, 65534, 71827, 99962, 143654, 349867, 699734, 1549411, 3098822, 10845877, 21691754]

約数ペア:

[(1, 21691754), (2, 10845877), (7, 3098822), (14, 1549411), (31, 699734), (62, 349867), (151, 143654), (217, 99962), (302, 71827), (331, 65534), (434, 49981), (662, 32767), (1057, 20522), (2114, 10261), (2317, 9362), (4634, 4681)]