20925004

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:422

約数の個数: 36

約数和(自身を含む): 39663624

約数和(自身を除く): 18738620

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 337, 361, 674, 722, 817, 1348, 1444, 1634, 3268, 6403, 12806, 14491, 15523, 25612, 28982, 31046, 57964, 62092, 121657, 243314, 275329, 486628, 550658, 1101316, 5231251, 10462502, 20925004]

約数ペア:

[(1, 20925004), (2, 10462502), (4, 5231251), (19, 1101316), (38, 550658), (43, 486628), (76, 275329), (86, 243314), (172, 121657), (337, 62092), (361, 57964), (674, 31046), (722, 28982), (817, 25612), (1348, 15523), (1444, 14491), (1634, 12806), (3268, 6403)]