19902253

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{991}}^1$

素因数の和:1168

約数の個数: 16

約数和(自身を含む): 24125440

約数和(自身を除く): 4223187

約数列:

[1, 7, 19, 133, 151, 991, 1057, 2869, 6937, 18829, 20083, 131803, 149641, 1047487, 2843179, 19902253]

約数ペア:

[(1, 19902253), (7, 2843179), (19, 1047487), (133, 149641), (151, 131803), (991, 20083), (1057, 18829), (2869, 6937)]