1388140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 3316320

約数和(自身を除く): 1928180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 281, 380, 494, 562, 988, 1124, 1235, 1405, 2470, 2810, 3653, 4940, 5339, 5620, 7306, 10678, 14612, 18265, 21356, 26695, 36530, 53390, 69407, 73060, 106780, 138814, 277628, 347035, 694070, 1388140]

約数ペア:

[(1, 1388140), (2, 694070), (4, 347035), (5, 277628), (10, 138814), (13, 106780), (19, 73060), (20, 69407), (26, 53390), (38, 36530), (52, 26695), (65, 21356), (76, 18265), (95, 14612), (130, 10678), (190, 7306), (247, 5620), (260, 5339), (281, 4940), (380, 3653), (494, 2810), (562, 2470), (988, 1405), (1124, 1235)]