28157890

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{39659}}^1$

素因数の和:39737

約数の個数: 16

約数和(自身を含む): 51399360

約数和(自身を除く): 23241470

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 39659, 79318, 198295, 396590, 2815789, 5631578, 14078945, 28157890]

約数ペア:

[(1, 28157890), (2, 14078945), (5, 5631578), (10, 2815789), (71, 396590), (142, 198295), (355, 79318), (710, 39659)]