20784874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:378

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 14466326

約数列:

[1, 2, 11, 22, 59, 67, 118, 134, 239, 478, 649, 737, 1298, 1474, 2629, 3953, 5258, 7906, 14101, 16013, 28202, 32026, 43483, 86966, 155111, 176143, 310222, 352286, 944767, 1889534, 10392437, 20784874]

約数ペア:

[(1, 20784874), (2, 10392437), (11, 1889534), (22, 944767), (59, 352286), (67, 310222), (118, 176143), (134, 155111), (239, 86966), (478, 43483), (649, 32026), (737, 28202), (1298, 16013), (1474, 14101), (2629, 7906), (3953, 5258)]