19945402

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{1069}}^1$

素因数の和:1581

約数の個数: 16

約数和(自身を含む): 31586400

約数和(自身を除く): 11640998

約数列:

[1, 2, 19, 38, 491, 982, 1069, 2138, 9329, 18658, 20311, 40622, 524879, 1049758, 9972701, 19945402]

約数ペア:

[(1, 19945402), (2, 9972701), (19, 1049758), (38, 524879), (491, 40622), (982, 20311), (1069, 18658), (2138, 9329)]