19768688

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72679}}^1$

素因数の和:72704

約数の個数: 20

約数和(自身を含む): 40555440

約数和(自身を除く): 20786752

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72679, 145358, 290716, 581432, 1162864, 1235543, 2471086, 4942172, 9884344, 19768688]

約数ペア:

[(1, 19768688), (2, 9884344), (4, 4942172), (8, 2471086), (16, 1235543), (17, 1162864), (34, 581432), (68, 290716), (136, 145358), (272, 72679)]