20491436

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{677}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 43739136

約数和(自身を除く): 23247700

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 47, 92, 94, 161, 188, 322, 329, 644, 658, 677, 1081, 1316, 1354, 2162, 2708, 4324, 4739, 7567, 9478, 15134, 15571, 18956, 30268, 31142, 31819, 62284, 63638, 108997, 127276, 217994, 222733, 435988, 445466, 731837, 890932, 1463674, 2927348, 5122859, 10245718, 20491436]

約数ペア:

[(1, 20491436), (2, 10245718), (4, 5122859), (7, 2927348), (14, 1463674), (23, 890932), (28, 731837), (46, 445466), (47, 435988), (92, 222733), (94, 217994), (161, 127276), (188, 108997), (322, 63638), (329, 62284), (644, 31819), (658, 31142), (677, 30268), (1081, 18956), (1316, 15571), (1354, 15134), (2162, 9478), (2708, 7567), (4324, 4739)]