81219572

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61717}}^1$

素因数の和:61775

約数の個数: 24

約数和(自身を含む): 165897984

約数和(自身を除く): 84678412

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 61717, 123434, 246868, 432019, 864038, 1728076, 2900699, 5801398, 11602796, 20304893, 40609786, 81219572]

約数ペア:

[(1, 81219572), (2, 40609786), (4, 20304893), (7, 11602796), (14, 5801398), (28, 2900699), (47, 1728076), (94, 864038), (188, 432019), (329, 246868), (658, 123434), (1316, 61717)]