20742904

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28493}}^1$

素因数の和:28519

約数の個数: 32

約数和(自身を含む): 47869920

約数和(自身を除く): 27127016

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28493, 56986, 113972, 199451, 227944, 370409, 398902, 740818, 797804, 1481636, 1595608, 2592863, 2963272, 5185726, 10371452, 20742904]

約数ペア:

[(1, 20742904), (2, 10371452), (4, 5185726), (7, 2963272), (8, 2592863), (13, 1595608), (14, 1481636), (26, 797804), (28, 740818), (52, 398902), (56, 370409), (91, 227944), (104, 199451), (182, 113972), (364, 56986), (728, 28493)]