19539664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71837}}^1$

素因数の和:71862

約数の個数: 20

約数和(自身を含む): 40085604

約数和(自身を除く): 20545940

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 71837, 143674, 287348, 574696, 1149392, 1221229, 2442458, 4884916, 9769832, 19539664]

約数ペア:

[(1, 19539664), (2, 9769832), (4, 4884916), (8, 2442458), (16, 1221229), (17, 1149392), (34, 574696), (68, 287348), (136, 143674), (272, 71837)]