20480908

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 22097012

約数列:

[1, 2, 4, 7, 14, 28, 47, 79, 94, 158, 188, 197, 316, 329, 394, 553, 658, 788, 1106, 1316, 1379, 2212, 2758, 3713, 5516, 7426, 9259, 14852, 15563, 18518, 25991, 31126, 37036, 51982, 62252, 64813, 103964, 108941, 129626, 217882, 259252, 435764, 731461, 1462922, 2925844, 5120227, 10240454, 20480908]

約数ペア:

[(1, 20480908), (2, 10240454), (4, 5120227), (7, 2925844), (14, 1462922), (28, 731461), (47, 435764), (79, 259252), (94, 217882), (158, 129626), (188, 108941), (197, 103964), (316, 64813), (329, 62252), (394, 51982), (553, 37036), (658, 31126), (788, 25991), (1106, 18518), (1316, 15563), (1379, 14852), (2212, 9259), (2758, 7426), (3713, 5516)]