20256445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 7944515

約数列:

[1, 5, 11, 23, 55, 67, 115, 239, 253, 335, 737, 1195, 1265, 1541, 2629, 3685, 5497, 7705, 13145, 16013, 16951, 27485, 60467, 80065, 84755, 176143, 302335, 368299, 880715, 1841495, 4051289, 20256445]

約数ペア:

[(1, 20256445), (5, 4051289), (11, 1841495), (23, 880715), (55, 368299), (67, 302335), (115, 176143), (239, 84755), (253, 80065), (335, 60467), (737, 27485), (1195, 16951), (1265, 16013), (1541, 13145), (2629, 7705), (3685, 5497)]