20253905

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{229}}^1$

素因数の和:286

約数の個数: 36

約数和(自身を含む): 29969460

約数和(自身を除く): 9715555

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 229, 245, 361, 665, 931, 1145, 1603, 1805, 2527, 4351, 4655, 8015, 11221, 12635, 17689, 21755, 30457, 56105, 82669, 88445, 152285, 213199, 413345, 578683, 1065995, 2893415, 4050781, 20253905]

約数ペア:

[(1, 20253905), (5, 4050781), (7, 2893415), (19, 1065995), (35, 578683), (49, 413345), (95, 213199), (133, 152285), (229, 88445), (245, 82669), (361, 56105), (665, 30457), (931, 21755), (1145, 17689), (1603, 12635), (1805, 11221), (2527, 8015), (4351, 4655)]