220103905

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{3851}}^1$

素因数の和:3957

約数の個数: 32

約数和(自身を含む): 319500288

約数和(自身を除く): 99396383

約数列:

[1, 5, 7, 23, 35, 71, 115, 161, 355, 497, 805, 1633, 2485, 3851, 8165, 11431, 19255, 26957, 57155, 88573, 134785, 273421, 442865, 620011, 1367105, 1913947, 3100055, 6288683, 9569735, 31443415, 44020781, 220103905]

約数ペア:

[(1, 220103905), (5, 44020781), (7, 31443415), (23, 9569735), (35, 6288683), (71, 3100055), (115, 1913947), (161, 1367105), (355, 620011), (497, 442865), (805, 273421), (1633, 134785), (2485, 88573), (3851, 57155), (8165, 26957), (11431, 19255)]