138780005

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43573}}^1$

素因数の和:43605

約数の個数: 24

約数和(自身を含む): 208632312

約数和(自身を除く): 69852307

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 43573, 217865, 305011, 566449, 1525055, 2135077, 2832245, 3965143, 10675385, 19825715, 27756001, 138780005]

約数ペア:

[(1, 138780005), (5, 27756001), (7, 19825715), (13, 10675385), (35, 3965143), (49, 2832245), (65, 2135077), (91, 1525055), (245, 566449), (455, 305011), (637, 217865), (3185, 43573)]