28318705

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1\times {\mathrm{331}}^1$

素因数の和:648

約数の個数: 16

約数和(自身を含む): 34708608

約数和(自身を除く): 6389903

約数列:

[1, 5, 71, 241, 331, 355, 1205, 1655, 17111, 23501, 79771, 85555, 117505, 398855, 5663741, 28318705]

約数ペア:

[(1, 28318705), (5, 5663741), (71, 398855), (241, 117505), (331, 85555), (355, 79771), (1205, 23501), (1655, 17111)]