19904056

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{40787}}^1$

素因数の和:40854

約数の個数: 16

約数和(自身を含む): 37932840

約数和(自身を除く): 18028784

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 40787, 81574, 163148, 326296, 2488007, 4976014, 9952028, 19904056]

約数ペア:

[(1, 19904056), (2, 9952028), (4, 4976014), (8, 2488007), (61, 326296), (122, 163148), (244, 81574), (488, 40787)]