19967668

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15173}}^1$

素因数の和:15231

約数の個数: 24

約数和(自身を含む): 40787712

約数和(自身を除く): 20820044

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15173, 30346, 60692, 106211, 212422, 424844, 713131, 1426262, 2852524, 4991917, 9983834, 19967668]

約数ペア:

[(1, 19967668), (2, 9983834), (4, 4991917), (7, 2852524), (14, 1426262), (28, 713131), (47, 424844), (94, 212422), (188, 106211), (329, 60692), (658, 30346), (1316, 15173)]