19901296

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{12823}}^1$

素因数の和:12928

約数の個数: 20

約数和(自身を含む): 38959312

約数和(自身を除く): 19058016

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 12823, 25646, 51292, 102584, 205168, 1243831, 2487662, 4975324, 9950648, 19901296]

約数ペア:

[(1, 19901296), (2, 9950648), (4, 4975324), (8, 2487662), (16, 1243831), (97, 205168), (194, 102584), (388, 51292), (776, 25646), (1552, 12823)]