187780005

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{28387}}^1$

素因数の和:28415

約数の個数: 48

約数和(自身を含む): 388347840

約数和(自身を除く): 200567835

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 6615, 28387, 85161, 141935, 198709, 255483, 425805, 596127, 766449, 993545, 1277415, 1390963, 1788381, 2980635, 3832245, 4172889, 5365143, 6954815, 8941905, 12518667, 20864445, 26825715, 37556001, 62593335, 187780005]

約数ペア:

[(1, 187780005), (3, 62593335), (5, 37556001), (7, 26825715), (9, 20864445), (15, 12518667), (21, 8941905), (27, 6954815), (35, 5365143), (45, 4172889), (49, 3832245), (63, 2980635), (105, 1788381), (135, 1390963), (147, 1277415), (189, 993545), (245, 766449), (315, 596127), (441, 425805), (735, 255483), (945, 198709), (1323, 141935), (2205, 85161), (6615, 28387)]