260021905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{1013}}^1$

素因数の和:1401

約数の個数: 32

約数和(自身を含む): 367960320

約数和(自身を除く): 107938415

約数列:

[1, 5, 11, 13, 55, 65, 143, 359, 715, 1013, 1795, 3949, 4667, 5065, 11143, 13169, 19745, 23335, 51337, 55715, 65845, 144859, 256685, 363667, 724295, 1818335, 4000337, 4727671, 20001685, 23638355, 52004381, 260021905]

約数ペア:

[(1, 260021905), (5, 52004381), (11, 23638355), (13, 20001685), (55, 4727671), (65, 4000337), (143, 1818335), (359, 724295), (715, 363667), (1013, 256685), (1795, 144859), (3949, 65845), (4667, 55715), (5065, 51337), (11143, 23335), (13169, 19745)]