21143090

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{307}}^1$

素因数の和:482

約数の個数: 32

約数和(自身を含む): 39118464

約数和(自身を除く): 17975374

約数列:

[1, 2, 5, 10, 71, 97, 142, 194, 307, 355, 485, 614, 710, 970, 1535, 3070, 6887, 13774, 21797, 29779, 34435, 43594, 59558, 68870, 108985, 148895, 217970, 297790, 2114309, 4228618, 10571545, 21143090]

約数ペア:

[(1, 21143090), (2, 10571545), (5, 4228618), (10, 2114309), (71, 297790), (97, 217970), (142, 148895), (194, 108985), (307, 68870), (355, 59558), (485, 43594), (614, 34435), (710, 29779), (970, 21797), (1535, 13774), (3070, 6887)]